Provided by: wget_1.21.3-1ubuntu1_amd64 bug


       Wget - The non-interactive network downloader.


       wget [option]... [URL]...


       GNU Wget is a free utility for non-interactive download of files from the Web.  It
       supports HTTP, HTTPS, and FTP protocols, as well as retrieval through HTTP proxies.

       Wget is non-interactive, meaning that it can work in the background, while the user is not
       logged on.  This allows you to start a retrieval and disconnect from the system, letting
       Wget finish the work.  By contrast, most of the Web browsers require constant user's
       presence, which can be a great hindrance when transferring a lot of data.

       Wget can follow links in HTML, XHTML, and CSS pages, to create local versions of remote
       web sites, fully recreating the directory structure of the original site.  This is
       sometimes referred to as "recursive downloading."  While doing that, Wget respects the
       Robot Exclusion Standard (/robots.txt).  Wget can be instructed to convert the links in
       downloaded files to point at the local files, for offline viewing.

       Wget has been designed for robustness over slow or unstable network connections; if a
       download fails due to a network problem, it will keep retrying until the whole file has
       been retrieved.  If the server supports regetting, it will instruct the server to continue
       the download from where it left off.


   Option Syntax
       Since Wget uses GNU getopt to process command-line arguments, every option has a long form
       along with the short one.  Long options are more convenient to remember, but take time to
       type.  You may freely mix different option styles, or specify options after the command-
       line arguments.  Thus you may write:

               wget -r --tries=10 -o log

       The space between the option accepting an argument and the argument may be omitted.
       Instead of -o log you can write -olog.

       You may put several options that do not require arguments together, like:

               wget -drc <URL>

       This is completely equivalent to:

               wget -d -r -c <URL>

       Since the options can be specified after the arguments, you may terminate them with --.
       So the following will try to download URL -x, reporting failure to log:

               wget -o log -- -x

       The options that accept comma-separated lists all respect the convention that specifying
       an empty list clears its value.  This can be useful to clear the .wgetrc settings.  For
       instance, if your .wgetrc sets "exclude_directories" to /cgi-bin, the following example
       will first reset it, and then set it to exclude /~nobody and /~somebody.  You can also
       clear the lists in .wgetrc.

               wget -X "" -X /~nobody,/~somebody

       Most options that do not accept arguments are boolean options, so named because their
       state can be captured with a yes-or-no ("boolean") variable.  For example, --follow-ftp
       tells Wget to follow FTP links from HTML files and, on the other hand, --no-glob tells it
       not to perform file globbing on FTP URLs.  A boolean option is either affirmative or
       negative (beginning with --no).  All such options share several properties.

       Unless stated otherwise, it is assumed that the default behavior is the opposite of what
       the option accomplishes.  For example, the documented existence of --follow-ftp assumes
       that the default is to not follow FTP links from HTML pages.

       Affirmative options can be negated by prepending the --no- to the option name; negative
       options can be negated by omitting the --no- prefix.  This might seem superfluous---if the
       default for an affirmative option is to not do something, then why provide a way to
       explicitly turn it off?  But the startup file may in fact change the default.  For
       instance, using "follow_ftp = on" in .wgetrc makes Wget follow FTP links by default, and
       using --no-follow-ftp is the only way to restore the factory default from the command

   Basic Startup Options
           Display the version of Wget.

           Print a help message describing all of Wget's command-line options.

           Go to background immediately after startup.  If no output file is specified via the
           -o, output is redirected to wget-log.

       -e command
       --execute command
           Execute command as if it were a part of .wgetrc.  A command thus invoked will be
           executed after the commands in .wgetrc, thus taking precedence over them.  If you need
           to specify more than one wgetrc command, use multiple instances of -e.

   Logging and Input File Options
       -o logfile
           Log all messages to logfile.  The messages are normally reported to standard error.

       -a logfile
           Append to logfile.  This is the same as -o, only it appends to logfile instead of
           overwriting the old log file.  If logfile does not exist, a new file is created.

           Turn on debug output, meaning various information important to the developers of Wget
           if it does not work properly.  Your system administrator may have chosen to compile
           Wget without debug support, in which case -d will not work.  Please note that
           compiling with debug support is always safe---Wget compiled with the debug support
           will not print any debug info unless requested with -d.

           Turn off Wget's output.

           Turn on verbose output, with all the available data.  The default output is verbose.

           Turn off verbose without being completely quiet (use -q for that), which means that
           error messages and basic information still get printed.

           Output bandwidth as type.  The only accepted value is bits.

       -i file
           Read URLs from a local or external file.  If - is specified as file, URLs are read
           from the standard input.  (Use ./- to read from a file literally named -.)

           If this function is used, no URLs need be present on the command line.  If there are
           URLs both on the command line and in an input file, those on the command lines will be
           the first ones to be retrieved.  If --force-html is not specified, then file should
           consist of a series of URLs, one per line.

           However, if you specify --force-html, the document will be regarded as html.  In that
           case you may have problems with relative links, which you can solve either by adding
           "<base href="url">" to the documents or by specifying --base=url on the command line.

           If the file is an external one, the document will be automatically treated as html if
           the Content-Type matches text/html.  Furthermore, the file's location will be
           implicitly used as base href if none was specified.

           Downloads files covered in local Metalink file. Metalink version 3 and 4 are

           Keeps downloaded Metalink's files with a bad hash. It appends .badhash to the name of
           Metalink's files which have a checksum mismatch, except without overwriting existing

           Issues HTTP HEAD request instead of GET and extracts Metalink metadata from response
           headers. Then it switches to Metalink download.  If no valid Metalink metadata is
           found, it falls back to ordinary HTTP download.  Enables Content-Type:
           application/metalink4+xml files download/processing.

           Set the Metalink application/metalink4+xml metaurl ordinal NUMBER. From 1 to the total
           number of "application/metalink4+xml" available.  Specify 0 or inf to choose the first
           good one.  Metaurls, such as those from a --metalink-over-http, may have been sorted
           by priority key's value; keep this in mind to choose the right NUMBER.

           Set preferred location for Metalink resources. This has effect if multiple resources
           with same priority are available.

           Enable use of file system's extended attributes to save the original URL and the
           Referer HTTP header value if used.

           Be aware that the URL might contain private information like access tokens or

           When input is read from a file, force it to be treated as an HTML file.  This enables
           you to retrieve relative links from existing HTML files on your local disk, by adding
           "<base href="url">" to HTML, or using the --base command-line option.

       -B URL
           Resolves relative links using URL as the point of reference, when reading links from
           an HTML file specified via the -i/--input-file option (together with --force-html, or
           when the input file was fetched remotely from a server describing it as HTML). This is
           equivalent to the presence of a "BASE" tag in the HTML input file, with URL as the
           value for the "href" attribute.

           For instance, if you specify http://foo/bar/a.html for URL, and Wget reads
           ../baz/b.html from the input file, it would be resolved to http://foo/baz/b.html.

           Specify the location of a startup file you wish to use instead of the default one(s).
           Use --no-config to disable reading of config files.  If both --config and --no-config
           are given, --no-config is ignored.

           Logs all URL rejections to logfile as comma separated values.  The values include the
           reason of rejection, the URL and the parent URL it was found in.

   Download Options
           When making client TCP/IP connections, bind to ADDRESS on the local machine.  ADDRESS
           may be specified as a hostname or IP address.  This option can be useful if your
           machine is bound to multiple IPs.

           [libcares only] This address overrides the route for DNS requests. If you ever need to
           circumvent the standard settings from /etc/resolv.conf, this option together with
           --dns-servers is your friend.  ADDRESS must be specified either as IPv4 or IPv6
           address.  Wget needs to be built with libcares for this option to be available.

           [libcares only] The given address(es) override the standard nameserver addresses,
           e.g. as configured in /etc/resolv.conf.  ADDRESSES may be specified either as IPv4 or
           IPv6 addresses, comma-separated.  Wget needs to be built with libcares for this option
           to be available.

       -t number
           Set number of tries to number. Specify 0 or inf for infinite retrying.  The default is
           to retry 20 times, with the exception of fatal errors like "connection refused" or
           "not found" (404), which are not retried.

       -O file
           The documents will not be written to the appropriate files, but all will be
           concatenated together and written to file.  If - is used as file, documents will be
           printed to standard output, disabling link conversion.  (Use ./- to print to a file
           literally named -.)

           Use of -O is not intended to mean simply "use the name file instead of the one in the
           URL;" rather, it is analogous to shell redirection: wget -O file http://foo is
           intended to work like wget -O - http://foo > file; file will be truncated immediately,
           and all downloaded content will be written there.

           For this reason, -N (for timestamp-checking) is not supported in combination with -O:
           since file is always newly created, it will always have a very new timestamp. A
           warning will be issued if this combination is used.

           Similarly, using -r or -p with -O may not work as you expect: Wget won't just download
           the first file to file and then download the rest to their normal names: all
           downloaded content will be placed in file. This was disabled in version 1.11, but has
           been reinstated (with a warning) in 1.11.2, as there are some cases where this
           behavior can actually have some use.

           A combination with -nc is only accepted if the given output file does not exist.

           Note that a combination with -k is only permitted when downloading a single document,
           as in that case it will just convert all relative URIs to external ones; -k makes no
           sense for multiple URIs when they're all being downloaded to a single file; -k can be
           used only when the output is a regular file.

           If a file is downloaded more than once in the same directory, Wget's behavior depends
           on a few options, including -nc.  In certain cases, the local file will be clobbered,
           or overwritten, upon repeated download.  In other cases it will be preserved.

           When running Wget without -N, -nc, -r, or -p, downloading the same file in the same
           directory will result in the original copy of file being preserved and the second copy
           being named file.1.  If that file is downloaded yet again, the third copy will be
           named file.2, and so on.  (This is also the behavior with -nd, even if -r or -p are in
           effect.)  When -nc is specified, this behavior is suppressed, and Wget will refuse to
           download newer copies of file.  Therefore, ""no-clobber"" is actually a misnomer in
           this mode---it's not clobbering that's prevented (as the numeric suffixes were already
           preventing clobbering), but rather the multiple version saving that's prevented.

           When running Wget with -r or -p, but without -N, -nd, or -nc, re-downloading a file
           will result in the new copy simply overwriting the old.  Adding -nc will prevent this
           behavior, instead causing the original version to be preserved and any newer copies on
           the server to be ignored.

           When running Wget with -N, with or without -r or -p, the decision as to whether or not
           to download a newer copy of a file depends on the local and remote timestamp and size
           of the file.  -nc may not be specified at the same time as -N.

           A combination with -O/--output-document is only accepted if the given output file does
           not exist.

           Note that when -nc is specified, files with the suffixes .html or .htm will be loaded
           from the local disk and parsed as if they had been retrieved from the Web.

           Before (over)writing a file, back up an existing file by adding a .1 suffix (_1 on
           VMS) to the file name.  Such backup files are rotated to .2, .3, and so on, up to
           backups (and lost beyond that).

           Do not try to obtain credentials from .netrc file. By default .netrc file is searched
           for credentials in case none have been passed on command line and authentication is

           Continue getting a partially-downloaded file.  This is useful when you want to finish
           up a download started by a previous instance of Wget, or by another program.  For

                   wget -c

           If there is a file named ls-lR.Z in the current directory, Wget will assume that it is
           the first portion of the remote file, and will ask the server to continue the
           retrieval from an offset equal to the length of the local file.

           Note that you don't need to specify this option if you just want the current
           invocation of Wget to retry downloading a file should the connection be lost midway
           through.  This is the default behavior.  -c only affects resumption of downloads
           started prior to this invocation of Wget, and whose local files are still sitting

           Without -c, the previous example would just download the remote file to ls-lR.Z.1,
           leaving the truncated ls-lR.Z file alone.

           If you use -c on a non-empty file, and the server does not support continued
           downloading, Wget will restart the download from scratch and overwrite the existing
           file entirely.

           Beginning with Wget 1.7, if you use -c on a file which is of equal size as the one on
           the server, Wget will refuse to download the file and print an explanatory message.
           The same happens when the file is smaller on the server than locally (presumably
           because it was changed on the server since your last download attempt)---because
           "continuing" is not meaningful, no download occurs.

           On the other side of the coin, while using -c, any file that's bigger on the server
           than locally will be considered an incomplete download and only "(length(remote) -
           length(local))" bytes will be downloaded and tacked onto the end of the local file.
           This behavior can be desirable in certain cases---for instance, you can use wget -c to
           download just the new portion that's been appended to a data collection or log file.

           However, if the file is bigger on the server because it's been changed, as opposed to
           just appended to, you'll end up with a garbled file.  Wget has no way of verifying
           that the local file is really a valid prefix of the remote file.  You need to be
           especially careful of this when using -c in conjunction with -r, since every file will
           be considered as an "incomplete download" candidate.

           Another instance where you'll get a garbled file if you try to use -c is if you have a
           lame HTTP proxy that inserts a "transfer interrupted" string into the local file.  In
           the future a "rollback" option may be added to deal with this case.

           Note that -c only works with FTP servers and with HTTP servers that support the
           "Range" header.

           Start downloading at zero-based position OFFSET.  Offset may be expressed in bytes,
           kilobytes with the `k' suffix, or megabytes with the `m' suffix, etc.

           --start-pos has higher precedence over --continue.  When --start-pos and --continue
           are both specified, wget will emit a warning then proceed as if --continue was absent.

           Server support for continued download is required, otherwise --start-pos cannot help.
           See -c for details.

           Select the type of the progress indicator you wish to use.  Legal indicators are "dot"
           and "bar".

           The "bar" indicator is used by default.  It draws an ASCII progress bar graphics
           (a.k.a "thermometer" display) indicating the status of retrieval.  If the output is
           not a TTY, the "dot" bar will be used by default.

           Use --progress=dot to switch to the "dot" display.  It traces the retrieval by
           printing dots on the screen, each dot representing a fixed amount of downloaded data.

           The progress type can also take one or more parameters.  The parameters vary based on
           the type selected.  Parameters to type are passed by appending them to the type
           sperated by a colon (:) like this: --progress=type:parameter1:parameter2.

           When using the dotted retrieval, you may set the style by specifying the type as
           dot:style.  Different styles assign different meaning to one dot.  With the "default"
           style each dot represents 1K, there are ten dots in a cluster and 50 dots in a line.
           The "binary" style has a more "computer"-like orientation---8K dots, 16-dots clusters
           and 48 dots per line (which makes for 384K lines).  The "mega" style is suitable for
           downloading large files---each dot represents 64K retrieved, there are eight dots in a
           cluster, and 48 dots on each line (so each line contains 3M).  If "mega" is not enough
           then you can use the "giga" style---each dot represents 1M retrieved, there are eight
           dots in a cluster, and 32 dots on each line (so each line contains 32M).

           With --progress=bar, there are currently two possible parameters, force and noscroll.

           When the output is not a TTY, the progress bar always falls back to "dot", even if
           --progress=bar was passed to Wget during invocation. This behaviour can be overridden
           and the "bar" output forced by using the "force" parameter as --progress=bar:force.

           By default, the bar style progress bar scroll the name of the file from left to right
           for the file being downloaded if the filename exceeds the maximum length allotted for
           its display.  In certain cases, such as with --progress=bar:force, one may not want
           the scrolling filename in the progress bar.  By passing the "noscroll" parameter, Wget
           can be forced to display as much of the filename as possible without scrolling through

           Note that you can set the default style using the "progress" command in .wgetrc.  That
           setting may be overridden from the command line.  For example, to force the bar output
           without scrolling, use --progress=bar:force:noscroll.

           Force wget to display the progress bar in any verbosity.

           By default, wget only displays the progress bar in verbose mode.  One may however,
           want wget to display the progress bar on screen in conjunction with any other
           verbosity modes like --no-verbose or --quiet.  This is often a desired a property when
           invoking wget to download several small/large files.  In such a case, wget could
           simply be invoked with this parameter to get a much cleaner output on the screen.

           This option will also force the progress bar to be printed to stderr when used
           alongside the --output-file option.

           Turn on time-stamping.

           Do not send If-Modified-Since header in -N mode. Send preliminary HEAD request
           instead. This has only effect in -N mode.

           Don't set the local file's timestamp by the one on the server.

           By default, when a file is downloaded, its timestamps are set to match those from the
           remote file. This allows the use of --timestamping on subsequent invocations of wget.
           However, it is sometimes useful to base the local file's timestamp on when it was
           actually downloaded; for that purpose, the --no-use-server-timestamps option has been

           Print the headers sent by HTTP servers and responses sent by FTP servers.

           When invoked with this option, Wget will behave as a Web spider, which means that it
           will not download the pages, just check that they are there.  For example, you can use
           Wget to check your bookmarks:

                   wget --spider --force-html -i bookmarks.html

           This feature needs much more work for Wget to get close to the functionality of real
           web spiders.

       -T seconds
           Set the network timeout to seconds seconds.  This is equivalent to specifying
           --dns-timeout, --connect-timeout, and --read-timeout, all at the same time.

           When interacting with the network, Wget can check for timeout and abort the operation
           if it takes too long.  This prevents anomalies like hanging reads and infinite
           connects.  The only timeout enabled by default is a 900-second read timeout.  Setting
           a timeout to 0 disables it altogether.  Unless you know what you are doing, it is best
           not to change the default timeout settings.

           All timeout-related options accept decimal values, as well as subsecond values.  For
           example, 0.1 seconds is a legal (though unwise) choice of timeout.  Subsecond timeouts
           are useful for checking server response times or for testing network latency.

           Set the DNS lookup timeout to seconds seconds.  DNS lookups that don't complete within
           the specified time will fail.  By default, there is no timeout on DNS lookups, other
           than that implemented by system libraries.

           Set the connect timeout to seconds seconds.  TCP connections that take longer to
           establish will be aborted.  By default, there is no connect timeout, other than that
           implemented by system libraries.

           Set the read (and write) timeout to seconds seconds.  The "time" of this timeout
           refers to idle time: if, at any point in the download, no data is received for more
           than the specified number of seconds, reading fails and the download is restarted.
           This option does not directly affect the duration of the entire download.

           Of course, the remote server may choose to terminate the connection sooner than this
           option requires.  The default read timeout is 900 seconds.

           Limit the download speed to amount bytes per second.  Amount may be expressed in
           bytes, kilobytes with the k suffix, or megabytes with the m suffix.  For example,
           --limit-rate=20k will limit the retrieval rate to 20KB/s.  This is useful when, for
           whatever reason, you don't want Wget to consume the entire available bandwidth.

           This option allows the use of decimal numbers, usually in conjunction with power
           suffixes; for example, --limit-rate=2.5k is a legal value.

           Note that Wget implements the limiting by sleeping the appropriate amount of time
           after a network read that took less time than specified by the rate.  Eventually this
           strategy causes the TCP transfer to slow down to approximately the specified rate.
           However, it may take some time for this balance to be achieved, so don't be surprised
           if limiting the rate doesn't work well with very small files.

       -w seconds
           Wait the specified number of seconds between the retrievals.  Use of this option is
           recommended, as it lightens the server load by making the requests less frequent.
           Instead of in seconds, the time can be specified in minutes using the "m" suffix, in
           hours using "h" suffix, or in days using "d" suffix.

           Specifying a large value for this option is useful if the network or the destination
           host is down, so that Wget can wait long enough to reasonably expect the network error
           to be fixed before the retry.  The waiting interval specified by this function is
           influenced by "--random-wait", which see.

           If you don't want Wget to wait between every retrieval, but only between retries of
           failed downloads, you can use this option.  Wget will use linear backoff, waiting 1
           second after the first failure on a given file, then waiting 2 seconds after the
           second failure on that file, up to the maximum number of seconds you specify.

           By default, Wget will assume a value of 10 seconds.

           Some web sites may perform log analysis to identify retrieval programs such as Wget by
           looking for statistically significant similarities in the time between requests. This
           option causes the time between requests to vary between 0.5 and 1.5 * wait seconds,
           where wait was specified using the --wait option, in order to mask Wget's presence
           from such analysis.

           A 2001 article in a publication devoted to development on a popular consumer platform
           provided code to perform this analysis on the fly.  Its author suggested blocking at
           the class C address level to ensure automated retrieval programs were blocked despite
           changing DHCP-supplied addresses.

           The --random-wait option was inspired by this ill-advised recommendation to block many
           unrelated users from a web site due to the actions of one.

           Don't use proxies, even if the appropriate *_proxy environment variable is defined.

       -Q quota
           Specify download quota for automatic retrievals.  The value can be specified in bytes
           (default), kilobytes (with k suffix), or megabytes (with m suffix).

           Note that quota will never affect downloading a single file.  So if you specify wget
           -Q10k, all of the ls-lR.gz will be downloaded.  The same
           goes even when several URLs are specified on the command-line.  The quota is checked
           only at the end of each downloaded file, so it will never result in a partially
           downloaded file. Thus you may safely type wget -Q2m -i sites---download will be
           aborted after the file that exhausts the quota is completely downloaded.

           Setting quota to 0 or to inf unlimits the download quota.

           Turn off caching of DNS lookups.  Normally, Wget remembers the IP addresses it looked
           up from DNS so it doesn't have to repeatedly contact the DNS server for the same
           (typically small) set of hosts it retrieves from.  This cache exists in memory only; a
           new Wget run will contact DNS again.

           However, it has been reported that in some situations it is not desirable to cache
           host names, even for the duration of a short-running application like Wget.  With this
           option Wget issues a new DNS lookup (more precisely, a new call to "gethostbyname" or
           "getaddrinfo") each time it makes a new connection.  Please note that this option will
           not affect caching that might be performed by the resolving library or by an external
           caching layer, such as NSCD.

           If you don't understand exactly what this option does, you probably won't need it.

           Change which characters found in remote URLs must be escaped during generation of
           local filenames.  Characters that are restricted by this option are escaped, i.e.
           replaced with %HH, where HH is the hexadecimal number that corresponds to the
           restricted character. This option may also be used to force all alphabetical cases to
           be either lower- or uppercase.

           By default, Wget escapes the characters that are not valid or safe as part of file
           names on your operating system, as well as control characters that are typically
           unprintable.  This option is useful for changing these defaults, perhaps because you
           are downloading to a non-native partition, or because you want to disable escaping of
           the control characters, or you want to further restrict characters to only those in
           the ASCII range of values.

           The modes are a comma-separated set of text values. The acceptable values are unix,
           windows, nocontrol, ascii, lowercase, and uppercase. The values unix and windows are
           mutually exclusive (one will override the other), as are lowercase and uppercase.
           Those last are special cases, as they do not change the set of characters that would
           be escaped, but rather force local file paths to be converted either to lower- or

           When "unix" is specified, Wget escapes the character / and the control characters in
           the ranges 0--31 and 128--159.  This is the default on Unix-like operating systems.

           When "windows" is given, Wget escapes the characters \, |, /, :, ?, ", *, <, >, and
           the control characters in the ranges 0--31 and 128--159.  In addition to this, Wget in
           Windows mode uses + instead of : to separate host and port in local file names, and
           uses @ instead of ? to separate the query portion of the file name from the rest.
           Therefore, a URL that would be saved as in
           Unix mode would be saved as in Windows mode.
           This mode is the default on Windows.

           If you specify nocontrol, then the escaping of the control characters is also switched
           off. This option may make sense when you are downloading URLs whose names contain
           UTF-8 characters, on a system which can save and display filenames in UTF-8 (some
           possible byte values used in UTF-8 byte sequences fall in the range of values
           designated by Wget as "controls").

           The ascii mode is used to specify that any bytes whose values are outside the range of
           ASCII characters (that is, greater than 127) shall be escaped. This can be useful when
           saving filenames whose encoding does not match the one used locally.

           Force connecting to IPv4 or IPv6 addresses.  With --inet4-only or -4, Wget will only
           connect to IPv4 hosts, ignoring AAAA records in DNS, and refusing to connect to IPv6
           addresses specified in URLs.  Conversely, with --inet6-only or -6, Wget will only
           connect to IPv6 hosts and ignore A records and IPv4 addresses.

           Neither options should be needed normally.  By default, an IPv6-aware Wget will use
           the address family specified by the host's DNS record.  If the DNS responds with both
           IPv4 and IPv6 addresses, Wget will try them in sequence until it finds one it can
           connect to.  (Also see "--prefer-family" option described below.)

           These options can be used to deliberately force the use of IPv4 or IPv6 address
           families on dual family systems, usually to aid debugging or to deal with broken
           network configuration.  Only one of --inet6-only and --inet4-only may be specified at
           the same time.  Neither option is available in Wget compiled without IPv6 support.

           When given a choice of several addresses, connect to the addresses with specified
           address family first.  The address order returned by DNS is used without change by

           This avoids spurious errors and connect attempts when accessing hosts that resolve to
           both IPv6 and IPv4 addresses from IPv4 networks.  For example, resolves
           to 2001:200:0:8002:203:47ff:fea5:3085 and to  When the preferred
           family is "IPv4", the IPv4 address is used first; when the preferred family is "IPv6",
           the IPv6 address is used first; if the specified value is "none", the address order
           returned by DNS is used without change.

           Unlike -4 and -6, this option doesn't inhibit access to any address family, it only
           changes the order in which the addresses are accessed.  Also note that the reordering
           performed by this option is stable---it doesn't affect order of addresses of the same
           family.  That is, the relative order of all IPv4 addresses and of all IPv6 addresses
           remains intact in all cases.

           Consider "connection refused" a transient error and try again.  Normally Wget gives up
           on a URL when it is unable to connect to the site because failure to connect is taken
           as a sign that the server is not running at all and that retries would not help.  This
           option is for mirroring unreliable sites whose servers tend to disappear for short
           periods of time.

           Specify the username user and password password for both FTP and HTTP file retrieval.
           These parameters can be overridden using the --ftp-user and --ftp-password options for
           FTP connections and the --http-user and --http-password options for HTTP connections.

           Prompt for a password for each connection established. Cannot be specified when
           --password is being used, because they are mutually exclusive.

           Prompt for a user and password using the specified command.  If no command is
           specified then the command in the environment variable WGET_ASKPASS is used.  If
           WGET_ASKPASS is not set then the command in the environment variable SSH_ASKPASS is

           You can set the default command for use-askpass in the .wgetrc.  That setting may be
           overridden from the command line.

           Turn off internationalized URI (IRI) support. Use --iri to turn it on. IRI support is
           activated by default.

           You can set the default state of IRI support using the "iri" command in .wgetrc. That
           setting may be overridden from the command line.

           Force Wget to use encoding as the default system encoding. That affects how Wget
           converts URLs specified as arguments from locale to UTF-8 for IRI support.

           Wget use the function "nl_langinfo()" and then the "CHARSET" environment variable to
           get the locale. If it fails, ASCII is used.

           You can set the default local encoding using the "local_encoding" command in .wgetrc.
           That setting may be overridden from the command line.

           Force Wget to use encoding as the default remote server encoding.  That affects how
           Wget converts URIs found in files from remote encoding to UTF-8 during a recursive
           fetch. This options is only useful for IRI support, for the interpretation of non-
           ASCII characters.

           For HTTP, remote encoding can be found in HTTP "Content-Type" header and in HTML
           "Content-Type http-equiv" meta tag.

           You can set the default encoding using the "remoteencoding" command in .wgetrc. That
           setting may be overridden from the command line.

           Force Wget to unlink file instead of clobbering existing file. This option is useful
           for downloading to the directory with hardlinks.

   Directory Options
           Do not create a hierarchy of directories when retrieving recursively.  With this
           option turned on, all files will get saved to the current directory, without
           clobbering (if a name shows up more than once, the filenames will get extensions .n).

           The opposite of -nd---create a hierarchy of directories, even if one would not have
           been created otherwise.  E.g. wget -x will save the
           downloaded file to

           Disable generation of host-prefixed directories.  By default, invoking Wget with -r
  will create a structure of directories beginning with
   This option disables such behavior.

           Use the protocol name as a directory component of local file names.  For example, with
           this option, wget -r http://host will save to http/host/... rather than just to

           Ignore number directory components.  This is useful for getting a fine-grained control
           over the directory where recursive retrieval will be saved.

           Take, for example, the directory at  If you retrieve
           it with -r, it will be saved locally under  While the -nH
           option can remove the part, you are still stuck with pub/xemacs.  This
           is where --cut-dirs comes in handy; it makes Wget not "see" number remote directory
           components.  Here are several examples of how --cut-dirs option works.

                   No options        ->
                   -nH               -> pub/xemacs/
                   -nH --cut-dirs=1  -> xemacs/
                   -nH --cut-dirs=2  -> .

                   --cut-dirs=1      ->

           If you just want to get rid of the directory structure, this option is similar to a
           combination of -nd and -P.  However, unlike -nd, --cut-dirs does not lose with
           subdirectories---for instance, with -nH --cut-dirs=1, a beta/ subdirectory will be
           placed to xemacs/beta, as one would expect.

       -P prefix
           Set directory prefix to prefix.  The directory prefix is the directory where all other
           files and subdirectories will be saved to, i.e. the top of the retrieval tree.  The
           default is . (the current directory).

   HTTP Options
           Use name as the default file name when it isn't known (i.e., for URLs that end in a
           slash), instead of index.html.

           If a file of type application/xhtml+xml or text/html is downloaded and the URL does
           not end with the regexp \.[Hh][Tt][Mm][Ll]?, this option will cause the suffix .html
           to be appended to the local filename.  This is useful, for instance, when you're
           mirroring a remote site that uses .asp pages, but you want the mirrored pages to be
           viewable on your stock Apache server.  Another good use for this is when you're
           downloading CGI-generated materials.  A URL like will
           be saved as article.cgi?25.html.

           Note that filenames changed in this way will be re-downloaded every time you re-mirror
           a site, because Wget can't tell that the local X.html file corresponds to remote URL X
           (since it doesn't yet know that the URL produces output of type text/html or

           As of version 1.12, Wget will also ensure that any downloaded files of type text/css
           end in the suffix .css, and the option was renamed from --html-extension, to better
           reflect its new behavior. The old option name is still acceptable, but should now be
           considered deprecated.

           As of version 1.19.2, Wget will also ensure that any downloaded files with a
           "Content-Encoding" of br, compress, deflate or gzip end in the suffix .br, .Z, .zlib
           and .gz respectively.

           At some point in the future, this option may well be expanded to include suffixes for
           other types of content, including content types that are not parsed by Wget.

           Specify the username user and password password on an HTTP server.  According to the
           type of the challenge, Wget will encode them using either the "basic" (insecure), the
           "digest", or the Windows "NTLM" authentication scheme.

           Another way to specify username and password is in the URL itself.  Either method
           reveals your password to anyone who bothers to run "ps".  To prevent the passwords
           from being seen, use the --use-askpass or store them in .wgetrc or .netrc, and make
           sure to protect those files from other users with "chmod".  If the passwords are
           really important, do not leave them lying in those files either---edit the files and
           delete them after Wget has started the download.

           Turn off the "keep-alive" feature for HTTP downloads.  Normally, Wget asks the server
           to keep the connection open so that, when you download more than one document from the
           same server, they get transferred over the same TCP connection.  This saves time and
           at the same time reduces the load on the server.

           This option is useful when, for some reason, persistent (keep-alive) connections don't
           work for you, for example due to a server bug or due to the inability of server-side
           scripts to cope with the connections.

           Disable server-side cache.  In this case, Wget will send the remote server appropriate
           directives (Cache-Control: no-cache and Pragma: no-cache) to get the file from the
           remote service, rather than returning the cached version. This is especially useful
           for retrieving and flushing out-of-date documents on proxy servers.

           Caching is allowed by default.

           Disable the use of cookies.  Cookies are a mechanism for maintaining server-side
           state.  The server sends the client a cookie using the "Set-Cookie" header, and the
           client responds with the same cookie upon further requests.  Since cookies allow the
           server owners to keep track of visitors and for sites to exchange this information,
           some consider them a breach of privacy.  The default is to use cookies; however,
           storing cookies is not on by default.

       --load-cookies file
           Load cookies from file before the first HTTP retrieval.  file is a textual file in the
           format originally used by Netscape's cookies.txt file.

           You will typically use this option when mirroring sites that require that you be
           logged in to access some or all of their content.  The login process typically works
           by the web server issuing an HTTP cookie upon receiving and verifying your
           credentials.  The cookie is then resent by the browser when accessing that part of the
           site, and so proves your identity.

           Mirroring such a site requires Wget to send the same cookies your browser sends when
           communicating with the site.  This is achieved by --load-cookies---simply point Wget
           to the location of the cookies.txt file, and it will send the same cookies your
           browser would send in the same situation.  Different browsers keep textual cookie
           files in different locations:

           "Netscape 4.x."
               The cookies are in ~/.netscape/cookies.txt.

           "Mozilla and Netscape 6.x."
               Mozilla's cookie file is also named cookies.txt, located somewhere under
               ~/.mozilla, in the directory of your profile.  The full path usually ends up
               looking somewhat like ~/.mozilla/default/some-weird-string/cookies.txt.

           "Internet Explorer."
               You can produce a cookie file Wget can use by using the File menu, Import and
               Export, Export Cookies.  This has been tested with Internet Explorer 5; it is not
               guaranteed to work with earlier versions.

           "Other browsers."
               If you are using a different browser to create your cookies, --load-cookies will
               only work if you can locate or produce a cookie file in the Netscape format that
               Wget expects.

           If you cannot use --load-cookies, there might still be an alternative.  If your
           browser supports a "cookie manager", you can use it to view the cookies used when
           accessing the site you're mirroring.  Write down the name and value of the cookie, and
           manually instruct Wget to send those cookies, bypassing the "official" cookie support:

                   wget --no-cookies --header "Cookie: <name>=<value>"

       --save-cookies file
           Save cookies to file before exiting.  This will not save cookies that have expired or
           that have no expiry time (so-called "session cookies"), but also see

           When specified, causes --save-cookies to also save session cookies.  Session cookies
           are normally not saved because they are meant to be kept in memory and forgotten when
           you exit the browser.  Saving them is useful on sites that require you to log in or to
           visit the home page before you can access some pages.  With this option, multiple Wget
           runs are considered a single browser session as far as the site is concerned.

           Since the cookie file format does not normally carry session cookies, Wget marks them
           with an expiry timestamp of 0.  Wget's --load-cookies recognizes those as session
           cookies, but it might confuse other browsers.  Also note that cookies so loaded will
           be treated as other session cookies, which means that if you want --save-cookies to
           preserve them again, you must use --keep-session-cookies again.

           Unfortunately, some HTTP servers (CGI programs, to be more precise) send out bogus
           "Content-Length" headers, which makes Wget go wild, as it thinks not all the document
           was retrieved.  You can spot this syndrome if Wget retries getting the same document
           again and again, each time claiming that the (otherwise normal) connection has closed
           on the very same byte.

           With this option, Wget will ignore the "Content-Length" header---as if it never

           Send header-line along with the rest of the headers in each HTTP request.  The
           supplied header is sent as-is, which means it must contain name and value separated by
           colon, and must not contain newlines.

           You may define more than one additional header by specifying --header more than once.

                   wget --header='Accept-Charset: iso-8859-2' \
                        --header='Accept-Language: hr'        \

           Specification of an empty string as the header value will clear all previous user-
           defined headers.

           As of Wget 1.10, this option can be used to override headers otherwise generated
           automatically.  This example instructs Wget to connect to localhost, but to specify
  in the "Host" header:

                   wget --header="Host:" http://localhost/

           In versions of Wget prior to 1.10 such use of --header caused sending of duplicate

           Choose the type of compression to be used.  Legal values are auto, gzip and none.

           If auto or gzip are specified, Wget asks the server to compress the file using the
           gzip compression format. If the server compresses the file and responds with the
           "Content-Encoding" header field set appropriately, the file will be decompressed

           If none is specified, wget will not ask the server to compress the file and will not
           decompress any server responses. This is the default.

           Compression support is currently experimental. In case it is turned on, please report
           any bugs to "".

           Specifies the maximum number of redirections to follow for a resource.  The default is
           20, which is usually far more than necessary. However, on those occasions where you
           want to allow more (or fewer), this is the option to use.

           Specify the username user and password password for authentication on a proxy server.
           Wget will encode them using the "basic" authentication scheme.

           Security considerations similar to those with --http-password pertain here as well.

           Include `Referer: url' header in HTTP request.  Useful for retrieving documents with
           server-side processing that assume they are always being retrieved by interactive web
           browsers and only come out properly when Referer is set to one of the pages that point
           to them.

           Save the headers sent by the HTTP server to the file, preceding the actual contents,
           with an empty line as the separator.

       -U agent-string
           Identify as agent-string to the HTTP server.

           The HTTP protocol allows the clients to identify themselves using a "User-Agent"
           header field.  This enables distinguishing the WWW software, usually for statistical
           purposes or for tracing of protocol violations.  Wget normally identifies as
           Wget/version, version being the current version number of Wget.

           However, some sites have been known to impose the policy of tailoring the output
           according to the "User-Agent"-supplied information.  While this is not such a bad idea
           in theory, it has been abused by servers denying information to clients other than
           (historically) Netscape or, more frequently, Microsoft Internet Explorer.  This option
           allows you to change the "User-Agent" line issued by Wget.  Use of this option is
           discouraged, unless you really know what you are doing.

           Specifying empty user agent with --user-agent="" instructs Wget not to send the
           "User-Agent" header in HTTP requests.

           Use POST as the method for all HTTP requests and send the specified data in the
           request body.  --post-data sends string as data, whereas --post-file sends the
           contents of file.  Other than that, they work in exactly the same way. In particular,
           they both expect content of the form "key1=value1&key2=value2", with percent-encoding
           for special characters; the only difference is that one expects its content as a
           command-line parameter and the other accepts its content from a file. In particular,
           --post-file is not for transmitting files as form attachments: those must appear as
           "key=value" data (with appropriate percent-coding) just like everything else. Wget
           does not currently support "multipart/form-data" for transmitting POST data; only
           "application/x-www-form-urlencoded". Only one of --post-data and --post-file should be

           Please note that wget does not require the content to be of the form
           "key1=value1&key2=value2", and neither does it test for it. Wget will simply transmit
           whatever data is provided to it. Most servers however expect the POST data to be in
           the above format when processing HTML Forms.

           When sending a POST request using the --post-file option, Wget treats the file as a
           binary file and will send every character in the POST request without stripping
           trailing newline or formfeed characters. Any other control characters in the text will
           also be sent as-is in the POST request.

           Please be aware that Wget needs to know the size of the POST data in advance.
           Therefore the argument to "--post-file" must be a regular file; specifying a FIFO or
           something like /dev/stdin won't work.  It's not quite clear how to work around this
           limitation inherent in HTTP/1.0.  Although HTTP/1.1 introduces chunked transfer that
           doesn't require knowing the request length in advance, a client can't use chunked
           unless it knows it's talking to an HTTP/1.1 server.  And it can't know that until it
           receives a response, which in turn requires the request to have been completed -- a
           chicken-and-egg problem.

           Note: As of version 1.15 if Wget is redirected after the POST request is completed,
           its behaviour will depend on the response code returned by the server.  In case of a
           301 Moved Permanently, 302 Moved Temporarily or 307 Temporary Redirect, Wget will, in
           accordance with RFC2616, continue to send a POST request.  In case a server wants the
           client to change the Request method upon redirection, it should send a 303 See Other
           response code.

           This example shows how to log in to a server using POST and then proceed to download
           the desired pages, presumably only accessible to authorized users:

                   # Log in to the server.  This can be done only once.
                   wget --save-cookies cookies.txt \
                        --post-data 'user=foo&password=bar' \

                   # Now grab the page or pages we care about.
                   wget --load-cookies cookies.txt \

           If the server is using session cookies to track user authentication, the above will
           not work because --save-cookies will not save them (and neither will browsers) and the
           cookies.txt file will be empty.  In that case use --keep-session-cookies along with
           --save-cookies to force saving of session cookies.

           For the purpose of RESTful scripting, Wget allows sending of other HTTP Methods
           without the need to explicitly set them using --header=Header-Line.  Wget will use
           whatever string is passed to it after --method as the HTTP Method to the server.

           Must be set when additional data needs to be sent to the server along with the Method
           specified using --method.  --body-data sends string as data, whereas --body-file sends
           the contents of file.  Other than that, they work in exactly the same way.

           Currently, --body-file is not for transmitting files as a whole.  Wget does not
           currently support "multipart/form-data" for transmitting data; only
           "application/x-www-form-urlencoded". In the future, this may be changed so that wget
           sends the --body-file as a complete file instead of sending its contents to the
           server. Please be aware that Wget needs to know the contents of BODY Data in advance,
           and hence the argument to --body-file should be a regular file. See --post-file for a
           more detailed explanation.  Only one of --body-data and --body-file should be

           If Wget is redirected after the request is completed, Wget will suspend the current
           method and send a GET request till the redirection is completed.  This is true for all
           redirection response codes except 307 Temporary Redirect which is used to explicitly
           specify that the request method should not change.  Another exception is when the
           method is set to "POST", in which case the redirection rules specified under
           --post-data are followed.

           If this is set to on, experimental (not fully-functional) support for
           "Content-Disposition" headers is enabled. This can currently result in extra round-
           trips to the server for a "HEAD" request, and is known to suffer from a few bugs,
           which is why it is not currently enabled by default.

           This option is useful for some file-downloading CGI programs that use
           "Content-Disposition" headers to describe what the name of a downloaded file should

           When combined with --metalink-over-http and --trust-server-names, a Content-Type:
           application/metalink4+xml file is named using the "Content-Disposition" filename
           field, if available.

           If this is set to on, wget will not skip the content when the server responds with a
           http status code that indicates error.

           If this is set, on a redirect, the local file name will be based on the redirection
           URL.  By default the local file name is based on the original URL.  When doing
           recursive retrieving this can be helpful because in many web sites redirected URLs
           correspond to an underlying file structure, while link URLs do not.

           If this option is given, Wget will send Basic HTTP authentication information
           (plaintext username and password) for all requests, just like Wget 1.10.2 and prior
           did by default.

           Use of this option is not recommended, and is intended only to support some few
           obscure servers, which never send HTTP authentication challenges, but accept
           unsolicited auth info, say, in addition to form-based authentication.

           Consider host errors, such as "Temporary failure in name resolution", as non-fatal,
           transient errors.

           Consider given HTTP response codes as non-fatal, transient errors.  Supply a comma-
           separated list of 3-digit HTTP response codes as argument. Useful to work around
           special circumstances where retries are required, but the server responds with an
           error code normally not retried by Wget. Such errors might be 503 (Service
           Unavailable) and 429 (Too Many Requests). Retries enabled by this option are performed
           subject to the normal retry timing and retry count limitations of Wget.

           Using this option is intended to support special use cases only and is generally not
           recommended, as it can force retries even in cases where the server is actually trying
           to decrease its load. Please use wisely and only if you know what you are doing.

   HTTPS (SSL/TLS) Options
       To support encrypted HTTP (HTTPS) downloads, Wget must be compiled with an external SSL
       library. The current default is GnuTLS.  In addition, Wget also supports HSTS (HTTP Strict
       Transport Security).  If Wget is compiled without SSL support, none of these options are

           Choose the secure protocol to be used.  Legal values are auto, SSLv2, SSLv3, TLSv1,
           TLSv1_1, TLSv1_2, TLSv1_3 and PFS.  If auto is used, the SSL library is given the
           liberty of choosing the appropriate protocol automatically, which is achieved by
           sending a TLSv1 greeting. This is the default.

           Specifying SSLv2, SSLv3, TLSv1, TLSv1_1, TLSv1_2 or TLSv1_3 forces the use of the
           corresponding protocol.  This is useful when talking to old and buggy SSL server
           implementations that make it hard for the underlying SSL library to choose the correct
           protocol version.  Fortunately, such servers are quite rare.

           Specifying PFS enforces the use of the so-called Perfect Forward Security cipher
           suites. In short, PFS adds security by creating a one-time key for each SSL
           connection. It has a bit more CPU impact on client and server.  We use known to be
           secure ciphers (e.g. no MD4) and the TLS protocol. This mode also explicitly excludes
           non-PFS key exchange methods, such as RSA.

           When in recursive mode, only HTTPS links are followed.

           Set the cipher list string. Typically this string sets the cipher suites and other
           SSL/TLS options that the user wish should be used, in a set order of preference
           (GnuTLS calls it 'priority string'). This string will be fed verbatim to the SSL/TLS
           engine (OpenSSL or GnuTLS) and hence its format and syntax is dependent on that. Wget
           will not process or manipulate it in any way. Refer to the OpenSSL or GnuTLS
           documentation for more information.

           Don't check the server certificate against the available certificate authorities.
           Also don't require the URL host name to match the common name presented by the

           As of Wget 1.10, the default is to verify the server's certificate against the
           recognized certificate authorities, breaking the SSL handshake and aborting the
           download if the verification fails.  Although this provides more secure downloads, it
           does break interoperability with some sites that worked with previous Wget versions,
           particularly those using self-signed, expired, or otherwise invalid certificates.
           This option forces an "insecure" mode of operation that turns the certificate
           verification errors into warnings and allows you to proceed.

           If you encounter "certificate verification" errors or ones saying that "common name
           doesn't match requested host name", you can use this option to bypass the verification
           and proceed with the download.  Only use this option if you are otherwise convinced of
           the site's authenticity, or if you really don't care about the validity of its
           certificate.  It is almost always a bad idea not to check the certificates when
           transmitting confidential or important data.  For self-signed/internal certificates,
           you should download the certificate and verify against that instead of forcing this
           insecure mode.  If you are really sure of not desiring any certificate verification,
           you can specify --check-certificate=quiet to tell wget to not print any warning about
           invalid certificates, albeit in most cases this is the wrong thing to do.

           Use the client certificate stored in file.  This is needed for servers that are
           configured to require certificates from the clients that connect to them.  Normally a
           certificate is not required and this switch is optional.

           Specify the type of the client certificate.  Legal values are PEM (assumed by default)
           and DER, also known as ASN1.

           Read the private key from file.  This allows you to provide the private key in a file
           separate from the certificate.

           Specify the type of the private key.  Accepted values are PEM (the default) and DER.

           Use file as the file with the bundle of certificate authorities ("CA") to verify the
           peers.  The certificates must be in PEM format.

           Without this option Wget looks for CA certificates at the system-specified locations,
           chosen at OpenSSL installation time.

           Specifies directory containing CA certificates in PEM format.  Each file contains one
           CA certificate, and the file name is based on a hash value derived from the
           certificate.  This is achieved by processing a certificate directory with the
           "c_rehash" utility supplied with OpenSSL.  Using --ca-directory is more efficient than
           --ca-certificate when many certificates are installed because it allows Wget to fetch
           certificates on demand.

           Without this option Wget looks for CA certificates at the system-specified locations,
           chosen at OpenSSL installation time.

           Specifies a CRL file in file.  This is needed for certificates that have been
           revocated by the CAs.

           Tells wget to use the specified public key file (or hashes) to verify the peer.  This
           can be a path to a file which contains a single public key in PEM or DER format, or
           any number of base64 encoded sha256 hashes preceded by "sha256//" and separated by ";"

           When negotiating a TLS or SSL connection, the server sends a certificate indicating
           its identity. A public key is extracted from this certificate and if it does not
           exactly match the public key(s) provided to this option, wget will abort the
           connection before sending or receiving any data.

           [OpenSSL and LibreSSL only] Use file as the source of random data for seeding the
           pseudo-random number generator on systems without /dev/urandom.

           On such systems the SSL library needs an external source of randomness to initialize.
           Randomness may be provided by EGD (see --egd-file below) or read from an external
           source specified by the user.  If this option is not specified, Wget looks for random
           data in $RANDFILE or, if that is unset, in $HOME/.rnd.

           If you're getting the "Could not seed OpenSSL PRNG; disabling SSL."  error, you should
           provide random data using some of the methods described above.

           [OpenSSL only] Use file as the EGD socket.  EGD stands for Entropy Gathering Daemon, a
           user-space program that collects data from various unpredictable system sources and
           makes it available to other programs that might need it.  Encryption software, such as
           the SSL library, needs sources of non-repeating randomness to seed the random number
           generator used to produce cryptographically strong keys.

           OpenSSL allows the user to specify his own source of entropy using the "RAND_FILE"
           environment variable.  If this variable is unset, or if the specified file does not
           produce enough randomness, OpenSSL will read random data from EGD socket specified
           using this option.

           If this option is not specified (and the equivalent startup command is not used), EGD
           is never contacted.  EGD is not needed on modern Unix systems that support

           Wget supports HSTS (HTTP Strict Transport Security, RFC 6797) by default.  Use
           --no-hsts to make Wget act as a non-HSTS-compliant UA. As a consequence, Wget would
           ignore all the "Strict-Transport-Security" headers, and would not enforce any existing
           HSTS policy.

           By default, Wget stores its HSTS database in ~/.wget-hsts.  You can use --hsts-file to
           override this. Wget will use the supplied file as the HSTS database. Such file must
           conform to the correct HSTS database format used by Wget. If Wget cannot parse the
           provided file, the behaviour is unspecified.

           The Wget's HSTS database is a plain text file. Each line contains an HSTS entry (ie. a
           site that has issued a "Strict-Transport-Security" header and that therefore has
           specified a concrete HSTS policy to be applied). Lines starting with a dash ("#") are
           ignored by Wget. Please note that in spite of this convenient human-readability hand-
           hacking the HSTS database is generally not a good idea.

           An HSTS entry line consists of several fields separated by one or more whitespace:

           "<hostname> SP [<port>] SP <include subdomains> SP <created> SP <max-age>"

           The hostname and port fields indicate the hostname and port to which the given HSTS
           policy applies. The port field may be zero, and it will, in most of the cases. That
           means that the port number will not be taken into account when deciding whether such
           HSTS policy should be applied on a given request (only the hostname will be
           evaluated). When port is different to zero, both the target hostname and the port will
           be evaluated and the HSTS policy will only be applied if both of them match. This
           feature has been included for testing/development purposes only.  The Wget testsuite
           (in testenv/) creates HSTS databases with explicit ports with the purpose of ensuring
           Wget's correct behaviour. Applying HSTS policies to ports other than the default ones
           is discouraged by RFC 6797 (see Appendix B "Differences between HSTS Policy and Same-
           Origin Policy"). Thus, this functionality should not be used in production
           environments and port will typically be zero. The last three fields do what they are
           expected to. The field include_subdomains can either be 1 or 0 and it signals whether
           the subdomains of the target domain should be part of the given HSTS policy as well.
           The created and max-age fields hold the timestamp values of when such entry was
           created (first seen by Wget) and the HSTS-defined value 'max-age', which states how
           long should that HSTS policy remain active, measured in seconds elapsed since the
           timestamp stored in created. Once that time has passed, that HSTS policy will no
           longer be valid and will eventually be removed from the database.

           If you supply your own HSTS database via --hsts-file, be aware that Wget may modify
           the provided file if any change occurs between the HSTS policies requested by the
           remote servers and those in the file. When Wget exits, it effectively updates the HSTS
           database by rewriting the database file with the new entries.

           If the supplied file does not exist, Wget will create one. This file will contain the
           new HSTS entries. If no HSTS entries were generated (no "Strict-Transport-Security"
           headers were sent by any of the servers) then no file will be created, not even an
           empty one. This behaviour applies to the default database file (~/.wget-hsts) as well:
           it will not be created until some server enforces an HSTS policy.

           Care is taken not to override possible changes made by other Wget processes at the
           same time over the HSTS database. Before dumping the updated HSTS entries on the file,
           Wget will re-read it and merge the changes.

           Using a custom HSTS database and/or modifying an existing one is discouraged.  For
           more information about the potential security threats arose from such practice, see
           section 14 "Security Considerations" of RFC 6797, specially section 14.9 "Creative
           Manipulation of HSTS Policy Store".

           Use file as the destination WARC file.

           Use string into as the warcinfo record.

           Set the maximum size of the WARC files to size.

           Write CDX index files.

           Do not store records listed in this CDX file.

           Do not compress WARC files with GZIP.

           Do not calculate SHA1 digests.

           Do not store the log file in a WARC record.

           Specify the location for temporary files created by the WARC writer.

   FTP Options
           Specify the username user and password password on an FTP server.  Without this, or
           the corresponding startup option, the password defaults to -wget@, normally used for
           anonymous FTP.

           Another way to specify username and password is in the URL itself.  Either method
           reveals your password to anyone who bothers to run "ps".  To prevent the passwords
           from being seen, store them in .wgetrc or .netrc, and make sure to protect those files
           from other users with "chmod".  If the passwords are really important, do not leave
           them lying in those files either---edit the files and delete them after Wget has
           started the download.

           Don't remove the temporary .listing files generated by FTP retrievals.  Normally,
           these files contain the raw directory listings received from FTP servers.  Not
           removing them can be useful for debugging purposes, or when you want to be able to
           easily check on the contents of remote server directories (e.g. to verify that a
           mirror you're running is complete).

           Note that even though Wget writes to a known filename for this file, this is not a
           security hole in the scenario of a user making .listing a symbolic link to /etc/passwd
           or something and asking "root" to run Wget in his or her directory.  Depending on the
           options used, either Wget will refuse to write to .listing, making the
           globbing/recursion/time-stamping operation fail, or the symbolic link will be deleted
           and replaced with the actual .listing file, or the listing will be written to a
           .listing.number file.

           Even though this situation isn't a problem, though, "root" should never run Wget in a
           non-trusted user's directory.  A user could do something as simple as linking
           index.html to /etc/passwd and asking "root" to run Wget with -N or -r so the file will
           be overwritten.

           Turn off FTP globbing.  Globbing refers to the use of shell-like special characters
           (wildcards), like *, ?, [ and ] to retrieve more than one file from the same directory
           at once, like:


           By default, globbing will be turned on if the URL contains a globbing character.  This
           option may be used to turn globbing on or off permanently.

           You may have to quote the URL to protect it from being expanded by your shell.
           Globbing makes Wget look for a directory listing, which is system-specific.  This is
           why it currently works only with Unix FTP servers (and the ones emulating Unix "ls"

           Disable the use of the passive FTP transfer mode.  Passive FTP mandates that the
           client connect to the server to establish the data connection rather than the other
           way around.

           If the machine is connected to the Internet directly, both passive and active FTP
           should work equally well.  Behind most firewall and NAT configurations passive FTP has
           a better chance of working.  However, in some rare firewall configurations, active FTP
           actually works when passive FTP doesn't.  If you suspect this to be the case, use this
           option, or set "passive_ftp=off" in your init file.

           Preserve remote file permissions instead of permissions set by umask.

           By default, when retrieving FTP directories recursively and a symbolic link is
           encountered, the symbolic link is traversed and the pointed-to files are retrieved.
           Currently, Wget does not traverse symbolic links to directories to download them
           recursively, though this feature may be added in the future.

           When --retr-symlinks=no is specified, the linked-to file is not downloaded.  Instead,
           a matching symbolic link is created on the local filesystem.  The pointed-to file will
           not be retrieved unless this recursive retrieval would have encountered it separately
           and downloaded it anyway.  This option poses a security risk where a malicious FTP
           Server may cause Wget to write to files outside of the intended directories through a
           specially crafted .LISTING file.

           Note that when retrieving a file (not a directory) because it was specified on the
           command-line, rather than because it was recursed to, this option has no effect.
           Symbolic links are always traversed in this case.

   FTPS Options
           This option tells Wget to use FTPS implicitly. Implicit FTPS consists of initializing
           SSL/TLS from the very beginning of the control connection. This option does not send
           an "AUTH TLS" command: it assumes the server speaks FTPS and directly starts an
           SSL/TLS connection. If the attempt is successful, the session continues just like
           regular FTPS ("PBSZ" and "PROT" are sent, etc.).  Implicit FTPS is no longer a
           requirement for FTPS implementations, and thus many servers may not support it. If
           --ftps-implicit is passed and no explicit port number specified, the default port for
           implicit FTPS, 990, will be used, instead of the default port for the "normal"
           (explicit) FTPS which is the same as that of FTP, 21.

           Do not resume the SSL/TLS session in the data channel. When starting a data
           connection, Wget tries to resume the SSL/TLS session previously started in the control
           connection.  SSL/TLS session resumption avoids performing an entirely new handshake by
           reusing the SSL/TLS parameters of a previous session. Typically, the FTPS servers want
           it that way, so Wget does this by default. Under rare circumstances however, one might
           want to start an entirely new SSL/TLS session in every data connection.  This is what
           --no-ftps-resume-ssl is for.

           All the data connections will be in plain text. Only the control connection will be
           under SSL/TLS. Wget will send a "PROT C" command to achieve this, which must be
           approved by the server.

           Fall back to FTP if FTPS is not supported by the target server. For security reasons,
           this option is not asserted by default. The default behaviour is to exit with an
           error.  If a server does not successfully reply to the initial "AUTH TLS" command, or
           in the case of implicit FTPS, if the initial SSL/TLS connection attempt is rejected,
           it is considered that such server does not support FTPS.

   Recursive Retrieval Options
           Turn on recursive retrieving.    The default maximum depth is 5.

       -l depth
           Set the maximum number of subdirectories that Wget will recurse into to depth.  In
           order to prevent one from accidentally downloading very large websites when using
           recursion this is limited to a depth of 5 by default, i.e., it will traverse at most 5
           directories deep starting from the provided URL.  Set -l 0 or -l inf for infinite
           recursion depth.

                   wget -r -l 0 http://<site>/1.html

           Ideally, one would expect this to download just 1.html.  but unfortunately this is not
           the case, because -l 0 is equivalent to -l inf---that is, infinite recursion.  To
           download a single HTML page (or a handful of them), specify them all on the command
           line and leave away -r and -l. To download the essential items to view a single HTML
           page, see page requisites.

           This option tells Wget to delete every single file it downloads, after having done so.
           It is useful for pre-fetching popular pages through a proxy, e.g.:

                   wget -r -nd --delete-after

           The -r option is to retrieve recursively, and -nd to not create directories.

           Note that --delete-after deletes files on the local machine.  It does not issue the
           DELE command to remote FTP sites, for instance.  Also note that when --delete-after is
           specified, --convert-links is ignored, so .orig files are simply not created in the
           first place.

           After the download is complete, convert the links in the document to make them
           suitable for local viewing.  This affects not only the visible hyperlinks, but any
           part of the document that links to external content, such as embedded images, links to
           style sheets, hyperlinks to non-HTML content, etc.

           Each link will be changed in one of the two ways:

           •   The links to files that have been downloaded by Wget will be changed to refer to
               the file they point to as a relative link.

               Example: if the downloaded file /foo/doc.html links to /bar/img.gif, also
               downloaded, then the link in doc.html will be modified to point to ../bar/img.gif.
               This kind of transformation works reliably for arbitrary combinations of

           •   The links to files that have not been downloaded by Wget will be changed to
               include host name and absolute path of the location they point to.

               Example: if the downloaded file /foo/doc.html links to /bar/img.gif (or to
               ../bar/img.gif), then the link in doc.html will be modified to point to

           Because of this, local browsing works reliably: if a linked file was downloaded, the
           link will refer to its local name; if it was not downloaded, the link will refer to
           its full Internet address rather than presenting a broken link.  The fact that the
           former links are converted to relative links ensures that you can move the downloaded
           hierarchy to another directory.

           Note that only at the end of the download can Wget know which links have been
           downloaded.  Because of that, the work done by -k will be performed at the end of all
           the downloads.

           This option converts only the filename part of the URLs, leaving the rest of the URLs
           untouched. This filename part is sometimes referred to as the "basename", although we
           avoid that term here in order not to cause confusion.

           It works particularly well in conjunction with --adjust-extension, although this
           coupling is not enforced. It proves useful to populate Internet caches with files
           downloaded from different hosts.

           Example: if some link points to // with --adjust-extension asserted
           and its local destination is intended to be ./, then the link
           would be converted to // Note that only the filename part has
           been modified. The rest of the URL has been left untouched, including the net path
           ("//") which would otherwise be processed by Wget and converted to the effective
           scheme (ie. "http://").

           When converting a file, back up the original version with a .orig suffix.  Affects the
           behavior of -N.

           Turn on options suitable for mirroring.  This option turns on recursion and time-
           stamping, sets infinite recursion depth and keeps FTP directory listings.  It is
           currently equivalent to -r -N -l inf --no-remove-listing.

           This option causes Wget to download all the files that are necessary to properly
           display a given HTML page.  This includes such things as inlined images, sounds, and
           referenced stylesheets.

           Ordinarily, when downloading a single HTML page, any requisite documents that may be
           needed to display it properly are not downloaded.  Using -r together with -l can help,
           but since Wget does not ordinarily distinguish between external and inlined documents,
           one is generally left with "leaf documents" that are missing their requisites.

           For instance, say document 1.html contains an "<IMG>" tag referencing 1.gif and an
           "<A>" tag pointing to external document 2.html.  Say that 2.html is similar but that
           its image is 2.gif and it links to 3.html.  Say this continues up to some arbitrarily
           high number.

           If one executes the command:

                   wget -r -l 2 http://<site>/1.html

           then 1.html, 1.gif, 2.html, 2.gif, and 3.html will be downloaded.  As you can see,
           3.html is without its requisite 3.gif because Wget is simply counting the number of
           hops (up to 2) away from 1.html in order to determine where to stop the recursion.
           However, with this command:

                   wget -r -l 2 -p http://<site>/1.html

           all the above files and 3.html's requisite 3.gif will be downloaded.  Similarly,

                   wget -r -l 1 -p http://<site>/1.html

           will cause 1.html, 1.gif, 2.html, and 2.gif to be downloaded.  One might think that:

                   wget -r -l 0 -p http://<site>/1.html

           would download just 1.html and 1.gif, but unfortunately this is not the case, because
           -l 0 is equivalent to -l inf---that is, infinite recursion.  To download a single HTML
           page (or a handful of them, all specified on the command-line or in a -i URL input
           file) and its (or their) requisites, simply leave off -r and -l:

                   wget -p http://<site>/1.html

           Note that Wget will behave as if -r had been specified, but only that single page and
           its requisites will be downloaded.  Links from that page to external documents will
           not be followed.  Actually, to download a single page and all its requisites (even if
           they exist on separate websites), and make sure the lot displays properly locally,
           this author likes to use a few options in addition to -p:

                   wget -E -H -k -K -p http://<site>/<document>

           To finish off this topic, it's worth knowing that Wget's idea of an external document
           link is any URL specified in an "<A>" tag, an "<AREA>" tag, or a "<LINK>" tag other
           than "<LINK REL="stylesheet">".

           Turn on strict parsing of HTML comments.  The default is to terminate comments at the
           first occurrence of -->.

           According to specifications, HTML comments are expressed as SGML declarations.
           Declaration is special markup that begins with <! and ends with >, such as <!DOCTYPE
           ...>, that may contain comments between a pair of -- delimiters.  HTML comments are
           "empty declarations", SGML declarations without any non-comment text.  Therefore,
           <!--foo--> is a valid comment, and so is <!--one-- --two-->, but <!--1--2--> is not.

           On the other hand, most HTML writers don't perceive comments as anything other than
           text delimited with <!-- and -->, which is not quite the same.  For example, something
           like <!------------> works as a valid comment as long as the number of dashes is a
           multiple of four (!).  If not, the comment technically lasts until the next --, which
           may be at the other end of the document.  Because of this, many popular browsers
           completely ignore the specification and implement what users have come to expect:
           comments delimited with <!-- and -->.

           Until version 1.9, Wget interpreted comments strictly, which resulted in missing links
           in many web pages that displayed fine in browsers, but had the misfortune of
           containing non-compliant comments.  Beginning with version 1.9, Wget has joined the
           ranks of clients that implements "naive" comments, terminating each comment at the
           first occurrence of -->.

           If, for whatever reason, you want strict comment parsing, use this option to turn it

   Recursive Accept/Reject Options
       -A acclist --accept acclist
       -R rejlist --reject rejlist
           Specify comma-separated lists of file name suffixes or patterns to accept or reject.
           Note that if any of the wildcard characters, *, ?, [ or ], appear in an element of
           acclist or rejlist, it will be treated as a pattern, rather than a suffix.  In this
           case, you have to enclose the pattern into quotes to prevent your shell from expanding
           it, like in -A "*.mp3" or -A '*.mp3'.

       --accept-regex urlregex
       --reject-regex urlregex
           Specify a regular expression to accept or reject the complete URL.

       --regex-type regextype
           Specify the regular expression type.  Possible types are posix or pcre.  Note that to
           be able to use pcre type, wget has to be compiled with libpcre support.

       -D domain-list
           Set domains to be followed.  domain-list is a comma-separated list of domains.  Note
           that it does not turn on -H.

       --exclude-domains domain-list
           Specify the domains that are not to be followed.

           Follow FTP links from HTML documents.  Without this option, Wget will ignore all the
           FTP links.

           Wget has an internal table of HTML tag / attribute pairs that it considers when
           looking for linked documents during a recursive retrieval.  If a user wants only a
           subset of those tags to be considered, however, he or she should be specify such tags
           in a comma-separated list with this option.

           This is the opposite of the --follow-tags option.  To skip certain HTML tags when
           recursively looking for documents to download, specify them in a comma-separated list.

           In the past, this option was the best bet for downloading a single page and its
           requisites, using a command-line like:

                   wget --ignore-tags=a,area -H -k -K -r http://<site>/<document>

           However, the author of this option came across a page with tags like "<LINK REL="home"
           HREF="/">" and came to the realization that specifying tags to ignore was not enough.
           One can't just tell Wget to ignore "<LINK>", because then stylesheets will not be
           downloaded.  Now the best bet for downloading a single page and its requisites is the
           dedicated --page-requisites option.

           Ignore case when matching files and directories.  This influences the behavior of -R,
           -A, -I, and -X options, as well as globbing implemented when downloading from FTP
           sites.  For example, with this option, -A "*.txt" will match file1.txt, but also
           file2.TXT, file3.TxT, and so on.  The quotes in the example are to prevent the shell
           from expanding the pattern.

           Enable spanning across hosts when doing recursive retrieving.

           Follow relative links only.  Useful for retrieving a specific home page without any
           distractions, not even those from the same hosts.

       -I list
           Specify a comma-separated list of directories you wish to follow when downloading.
           Elements of list may contain wildcards.

       -X list
           Specify a comma-separated list of directories you wish to exclude from download.
           Elements of list may contain wildcards.

           Do not ever ascend to the parent directory when retrieving recursively.  This is a
           useful option, since it guarantees that only the files below a certain hierarchy will
           be downloaded.


       Wget supports proxies for both HTTP and FTP retrievals.  The standard way to specify proxy
       location, which Wget recognizes, is using the following environment variables:

           If set, the http_proxy and https_proxy variables should contain the URLs of the
           proxies for HTTP and HTTPS connections respectively.

           This variable should contain the URL of the proxy for FTP connections.  It is quite
           common that http_proxy and ftp_proxy are set to the same URL.

           This variable should contain a comma-separated list of domain extensions proxy should
           not be used for.  For instance, if the value of no_proxy is, proxy will not
           be used to retrieve documents from MIT.


       Wget may return one of several error codes if it encounters problems.

       0   No problems occurred.

       1   Generic error code.

       2   Parse error---for instance, when parsing command-line options, the .wgetrc or

       3   File I/O error.

       4   Network failure.

       5   SSL verification failure.

       6   Username/password authentication failure.

       7   Protocol errors.

       8   Server issued an error response.

       With the exceptions of 0 and 1, the lower-numbered exit codes take precedence over higher-
       numbered ones, when multiple types of errors are encountered.

       In versions of Wget prior to 1.12, Wget's exit status tended to be unhelpful and
       inconsistent. Recursive downloads would virtually always return 0 (success), regardless of
       any issues encountered, and non-recursive fetches only returned the status corresponding
       to the most recently-attempted download.


           Default location of the global startup file.

           User startup file.


       You are welcome to submit bug reports via the GNU Wget bug tracker (see
       <>) or to our mailing list

       Visit <> to get more info (how to
       subscribe, list archives, ...).

       Before actually submitting a bug report, please try to follow a few simple guidelines.

       1.  Please try to ascertain that the behavior you see really is a bug.  If Wget crashes,
           it's a bug.  If Wget does not behave as documented, it's a bug.  If things work
           strange, but you are not sure about the way they are supposed to work, it might well
           be a bug, but you might want to double-check the documentation and the mailing lists.

       2.  Try to repeat the bug in as simple circumstances as possible.  E.g. if Wget crashes
           while downloading wget -rl0 -kKE -t5 --no-proxy -o /tmp/log, you
           should try to see if the crash is repeatable, and if will occur with a simpler set of
           options.  You might even try to start the download at the page where the crash
           occurred to see if that page somehow triggered the crash.

           Also, while I will probably be interested to know the contents of your .wgetrc file,
           just dumping it into the debug message is probably a bad idea.  Instead, you should
           first try to see if the bug repeats with .wgetrc moved out of the way.  Only if it
           turns out that .wgetrc settings affect the bug, mail me the relevant parts of the

       3.  Please start Wget with -d option and send us the resulting output (or relevant parts
           thereof).  If Wget was compiled without debug support, recompile it---it is much
           easier to trace bugs with debug support on.

           Note: please make sure to remove any potentially sensitive information from the debug
           log before sending it to the bug address.  The "-d" won't go out of its way to collect
           sensitive information, but the log will contain a fairly complete transcript of Wget's
           communication with the server, which may include passwords and pieces of downloaded
           data.  Since the bug address is publicly archived, you may assume that all bug reports
           are visible to the public.

       4.  If Wget has crashed, try to run it in a debugger, e.g. "gdb `which wget` core" and
           type "where" to get the backtrace.  This may not work if the system administrator has
           disabled core files, but it is safe to try.


       This is not the complete manual for GNU Wget.  For more complete information, including
       more detailed explanations of some of the options, and a number of commands available for
       use with .wgetrc files and the -e option, see the GNU Info entry for wget.

       Also see wget2(1), the updated version of GNU Wget with even better support for recursive
       downloading and modern protocols like HTTP/2.


       Originally written by Hrvoje Nikšić <>.  Currently maintained by Darshit
       Shah <> and Tim Rühsen <>.


       Copyright (c) 1996--2011, 2015, 2018--2022 Free Software Foundation, Inc.

       Permission is granted to copy, distribute and/or modify this document under the terms of
       the GNU Free Documentation License, Version 1.3 or any later version published by the Free
       Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no
       Back-Cover Texts.  A copy of the license is included in the section entitled "GNU Free
       Documentation License".