Ubuntu Manpage: lftp - Sophisticated file transfer program

Provided by: lftp_4.4.13-1ubuntu0.1_amd64

NAME

       lftp - Sophisticated file transfer program

SYNTAX

       lftp [-d] [-e cmd] [-p port] [-u user[,pass]] [site]
       lftp -f script_file
       lftp -c commands
       lftp --version
       lftp --help

VERSION

       This man page documents lftp version 4.4.12.

DESCRIPTION

lftp is a file transfer program that allows sophisticated ftp, http and other connections to other hosts.
If site is specified then lftp will connect to that site otherwise a connection has to be established
with the open command.

lftp can handle several file access methods - ftp, ftps, http, https, hftp, fish, sftp and file (https
and ftps are only available when lftp is compiled with GNU TLS or OpenSSL library). You can specify the
method to use in `open URL' command, e.g. `open http://www.us.kernel.org/pub/linux'. hftp is ftp-over-
http-proxy protocol. It can be used automatically instead of ftp if ftp:proxy is set to
`http://proxy[:port]'. Fish is a protocol working over an ssh connection to a unix account. SFtp is a
protocol implemented in ssh2 as sftp subsystem.

Besides FTP-like protocols, lftp has support for BitTorrent protocol as `torrent' command. Seeding is
also supported.

Every operation in lftp is reliable, that is any non-fatal error is handled properly and the operation is
repeated. So if downloading breaks, it will be restarted from the point automatically. Even if ftp server
does not support REST command, lftp will try to retrieve the file from the very beginning until the file
is transferred completely.

lftp has shell-like command syntax allowing you to launch several commands in parallel in background (&).
It is also possible to group commands within () and execute them in background. All background jobs are
executed in the same single process. You can bring a foreground job to background with ^Z (c-z) and back
with command `wait' (or `fg' which is alias to `wait'). To list running jobs, use command `jobs'. Some
commands allow redirecting their output (cat, ls, ...) to file or via pipe to external command. Commands
can be executed conditionally based on termination status of previous command (&&, ||).

If you exit lftp when some jobs are not finished yet, lftp will move itself to nohup mode in background.
The same happens when you have a real modem hangup or when you close an xterm.

lftp has built-in mirror which can download or update a whole directory tree. There is also reverse
mirror (mirror -R) which uploads or updates a directory tree on server. Mirror can also synchronize
directories between two remote servers, using FXP if available.

There is command `at' to launch a job at specified time in current context, command `queue' to queue
commands for sequential execution for current server, and much more.

On startup, lftp executes /etc/lftp.conf and then ~/.lftprc and ~/.lftp/rc. You can place aliases and
`set' commands there. Some people prefer to see full protocol debug, use `debug' to turn the debug on.
Use `debug 3' to see only greeting messages and error messages.

lftp has a number of settable variables. You can use `set -a' to see all variables and their values or
`set -d' to see list of defaults. Variable names can be abbreviated and prefix can be omitted unless the
rest becomes ambiguous.

If lftp was compiled with OpenSSL (configure --with-openssl), then it includes software developed by the
OpenSSL Project for use in the OpenSSL Toolkit. (http://www.openssl.org/)

Commands
! shell command

Launch shell or shell command.

!ls

To do a directory listing of the local host.

alias [name [value]]

Define or undefine alias name. If value is omitted, the alias is undefined, else it takes the value
value. If no argument is given the current aliases are listed.

alias dir ls -lF
alias less zmore

at time [ -- command ]

Wait until the given time and execute given (optional) command. See also at(1).

attach [PID]

Attach the terminal to specified backgrounded lftp process.

bookmark [subcommand]

The bookmark command controls bookmarks.

Site names can be used in the open command directly as-is or in any command that accepts input URLs using
the bm:site/path format.
add <name> [<loc>] add current place or given location to bookmarks and bind to given name
del <name> remove bookmark with name
edit start editor on bookmarks file
import <type> import foreign bookmarks
list list bookmarks (default)

cache [subcommand]

The cache command controls local memory cache. The following subcommands are recognized:
stat print cache status (default)
on|off turn on/off caching
flush flush cache
size lim set memory limit, -1 means unlimited
expire Nx set cache expiration time to N seconds (x=s) minutes (x=m) hours (x=h) or days (x=d)

cat files

cat outputs the remote file(s) to stdout. (See also more, zcat and zmore)

cd rdir

Change current remote directory. The previous remote directory is stored as `-'. You can do `cd -' to
change the directory back. The previous directory for each site is also stored on disk, so you can do
`open site; cd -' even after lftp restart.

chmod mode files

Change permission mask on remote files. The mode must be an octal number.

close [-a]

Close idle connections. By default only with the current server, use -a to close all idle connections.

cls [OPTS] files...

`cls' tries to retrieve information about specified files or directories and outputs the information
according to format options. The difference between `ls' and `cls' is that `ls' requests the server to
format file listing, and `cls' formats it itself, after retrieving all the needed information. See `help
cls' for options.

command cmd args...

execute given command ignoring aliases.

debug [-o file] level|off

Switch debugging to level or turn it off. Use -o to redirect the debug output to a file.

echo [-n] string

guess what it does.

eval [-f format ] args...

without -f it just executes given arguments as a command. With -f, arguments are transformed into a new
command. The format can contain plain text and placeholders $0...$9 and $@, corresponding to the
arguments.

exit [bg] [top] [kill] [code]

exit will exit from lftp or move to background if there are active jobs. If no job is active, code is
passed to operating system as lftp's termination status. If code is omitted, the exit code of last
command is used.

`exit bg' forces moving to background when cmd:move-background is false. `exit top' makes top level
`shell' (internal lftp command executor) terminate. `exit kill' kills all numbered jobs before exiting.
The options can be combined, e.g. `at 08:00 -- exit top kill &' kills all jobs and makes lftp exit at
specified time.

Alias for `wait'.

find [OPTS] directory...

List files in the directory (current directory by default) recursively. This can help with servers
lacking ls -R support. You can redirect output of this command. Options:
-d MD, --max-depth=MD specify maximum scan depth
-l, --list use long listing format

ftpcopy

Obsolete. Use one of the following instead:
get ftp://... -o ftp://...
get -O ftp://... file1 file2...
put ftp://...
mput ftp://.../*
mget -O ftp://... ftp://.../*
or other combinations to get FXP transfer (directly between two ftp servers). lftp would fallback to
plain copy (via client) if FXP transfer cannot be initiated or ftp:use-fxp is false.

get [-E] [-a] [-c] [-e] [-O base] rfile [-o lfile] ...

Retrieve the remote file rfile and store it as the local file lfile. If -o is omitted, the file is
stored to local file named as base name of rfile. You can get multiple files by specifying multiple
instances of rfile (and -o lfile). Does not expand wildcards, use mget for that.
-c continue, reget
-E delete source files after successful transfer
-e delete target file before the transfer
-a use ascii mode (binary is the default)
-O <base> specifies base directory or URL where files should be placed

Examples:
get README
get README -o debian.README
get README README.mirrors
get README -o debian.README README.mirrors -o debian.mirrors
get README -o ftp://some.host.org/debian.README
get README -o ftp://some.host.org/debian-dir/ (end slash is important)

get1 [OPTS] rfile

Transfer a single file. Options:
-o <lfile> destination file name (default - basename of rfile)
-c continue, reget
-E delete source files after successful transfer
-a use ascii mode (binary is the default)
--source-region=<from-to> transfer specified region of source file
--target-position=<pos> position in target file to write data at

glob [-d] [-a] [-f] command patterns

Glob given patterns containing metacharacters and pass result to given command. E.g. ``glob echo *''.
-f plain files (default)
-d directories
-a all types

help [cmd]

Print help for cmd or if no cmd was specified print a list of available commands.

jobs [-v] [job_no...]

List running jobs. -v means verbose, several -v can be specified. If job_no is specified, only list a
job with that number.

kill all|job_no

Delete specified job with job_no or all jobs. (For job_no see jobs)

lcd ldir

Change current local directory ldir. The previous local directory is stored as `-'. You can do `lcd -' to
change the directory back.

ln [-s] existing-file new-link

Make a hard/symbolic link to an existing file. Option -s selects creation of a symbolic link.

local command

Run specified command with local directory file:// session instead of remote session. Examples:
local pwd
local ls
local mirror /dir1 /dir2

lpwd

Print current working directory on local machine.

ls params

List remote files. You can redirect output of this command to file or via pipe to external command. By
default, ls output is cached, to see new listing use rels or cache flush.

mget [-c] [-d] [-a] [-E] [-O base] files

Gets selected files with expanded wildcards.

-c continue, reget.
-d create directories the same as file names and get the files into them instead of current
directory.
-E delete source files after successful transfer
-a use ascii mode (binary is the default)
-O <base> specifies base directory or URL where files should be placed

mirror [OPTS] [source [target]]

Mirror specified source directory to local target directory. If the target directory ends with a slash
(except the root), the source base name is appended to target directory name. Source and/or target can be
URLs pointing to directories.

-c, --continue continue a mirror job if possible
-e, --delete delete files not present at remote site
--delete-first delete old files before transferring new ones
--depth-first descend into subdirectories before transferring files
-s, --allow-suid set suid/sgid bits according to remote site
--allow-chown try to set owner and group on files
--ascii use ascii mode transfers (implies --ignore-size)
--ignore-time ignore time when deciding whether to download
--ignore-size ignore size when deciding whether to download
--only-missing download only missing files
--only-existing download only files already existing at target
-n, --only-newer download only newer files (-c won't work)
--no-empty-dirs don't create empty directories (implies --depth-first)
-r, --no-recursion don't go to subdirectories
--no-symlinks don't create symbolic links
-p, --no-perms don't set file permissions
--no-umask don't apply umask to file modes
-R, --reverse reverse mirror (put files)
-L, --dereference download symbolic links as files
-N, --newer-than=SPEC download only files newer than specified time
--older-than=SPEC download only files older than specified time
--size-range=RANGE download only files with size in specified range
-P, --parallel[=N] download N files in parallel
--use-pget[-n=N] use pget to transfer every single file
--on-change=CMD execute the command if anything has been changed
--loop repeat mirror until no changes found
-i RX, --include=RX include matching files
-x RX, --exclude=RX exclude matching files
-I GP, --include-glob=GP include matching files
-X GP, --exclude-glob=GP exclude matching files
-f FILE, --file=FILE mirror a single file or globbed group (e.g. /path/to/*.txt)
-O DIR, --target-directory=DIR target base path or URL
-v, --verbose[=level] verbose operation
--log=FILE write lftp commands being executed to FILE
--script=FILE write lftp commands to FILE, but don't execute them
--just-print, --dry-run same as --script=-
--use-cache use cached directory listings
--Remove-source-files remove files after transfer (use with caution)
-a same as --allow-chown --allow-suid --no-umask

When using -R, the source directory is local and the target is remote. If the target directory is
omitted, base name of the source directory is used. If both directories are omitted, current local and
remote directories are used. If the target directory ends with a slash (except the root directory) then
base name of the source directory is appended.

RX is an extended regular expression, just like in egrep(1).

GP is a glob pattern, e.g. `*.zip'.

Include and exclude options can be specified multiple times. It means that a file or directory would be
mirrored if it matches an include and does not match to excludes after the include, or does not match
anything and the first check is exclude. Directories are matched with a slash appended.

Note that symbolic links are not created when uploading to remote server, because ftp protocol cannot do
it. To upload files the links refer to, use `mirror -RL' command (treat symbolic links as files).

For options --newer-than and --older-than you can either specify a file or time specification like that
used by at(1) command, e.g. `now-7days' or `week ago'. If you specify a file, then modification time of
that file will be used.

Verbosity level can be selected using --verbose=level option or by several -v options, e.g. -vvv. Levels
are:
0 - no output (default)
1 - print actions
2 - +print not deleted file names (when -e is not specified)
3 - +print directory names which are mirrored

--only-newer turns off file size comparison and uploads/downloads only newer files even if size is
different. By default older files are transferred and replace newer ones.

You can mirror between two servers if you specify URLs instead of directories. FXP is used automatically
for transfers between ftp servers, if possible.

Some ftp servers hide dot-files by default (e.g. .htaccess), and show them only when LIST command is used
with -a option. In such case try to use `set ftp:list-options -a'.

mkdir [-p] dir(s)

Make remote directories. If -p is used, make all components of paths.

module module [ args ]

Load given module using dlopen(3) function. If module name does not contain a slash, it is searched in
directories specified by module:path variable. Arguments are passed to module_init function. See
README.modules for technical details.

more files

Same as `cat files | more'. if PAGER is set, it is used as filter. (See also cat, zcat and zmore)

mput [-c] [-d] [-a] [-E] [-O base] files

Upload files with wildcard expansion. By default it uses the base name of local name as remote one. This
can be changed by `-d' option.
-c continue, reput
-d create directories the same as in file names and put the files into them instead of
current directory
-E delete source files after successful transfer (dangerous)
-a use ascii mode (binary is the default)
-O <base> specifies base directory or URL where files should be placed

mrm file(s)

Same as `glob rm'. Removes specified file(s) with wildcard expansion.

mv file1 file2

Rename file1 to file2.

nlist [args]

List remote file names

open [-e cmd] [-u user[,pass]] [-p port] host|url

Select an ftp server.

pget [OPTS] rfile [-o lfile]

Gets the specified file using several connections. This can speed up transfer, but loads the net and
server heavily impacting other users. Use only if you really have to transfer the file ASAP. Options:
-c continue transfer. Requires lfile.lftp-pget-status file.
-n maxconn set maximum number of connections (default is taken from pget:default-n setting)

put [-E] [-a] [-c] [-O base] lfile [-o rfile]

Upload lfile with remote name rfile. If -o omitted, the base name of lfile is used as remote name. Does
not expand wildcards, use mput for that.
-o <rfile> specifies remote file name (default - basename of lfile)
-c continue, reput. It requires permission to overwrite remote files
-E delete source files after successful transfer (dangerous)
-a use ascii mode (binary is the default)
-O <base> specifies base directory or URL where files should be placed

pwd [-p]

Print current remote URL. Use `-p' option to show password in the URL.

queue [-n num ] cmd

Add the given command to queue for sequential execution. Each site has its own queue. `-n' adds the
command before the given item in the queue. Don't try to queue `cd' or `lcd' commands, it may confuse
lftp. Instead do the cd/lcd before `queue' command, and it will remember the place in which the command
is to be done. It is possible to queue up an already running job by `queue wait <jobno>', but the job
will continue execution even if it is not the first in queue.

`queue stop' will stop the queue, it will not execute any new commands, but already running jobs will
continue to run. You can use `queue stop' to create an empty stopped queue. `queue start' will resume
queue execution. When you exit lftp, it will start all stopped queues automatically.

`queue' with no arguments will either create a stopped queue or print queue status.

queue --delete|-d [index or wildcard expression]

Delete one or more items from the queue. If no argument is given, the last entry in the queue is deleted.

queue --move|-m <index or wildcard expression> [index]

Move the given items before the given queue index, or to the end if no destination is given.

-q Be quiet.
-v Be verbose.
-Q Output in a format that can be used to re-queue. Useful with --delete.

Examples:
> get file &
[1] get file
> queue wait 1
> queue get another_file
> cd a_directory
> queue get yet_another_file

queue -d 3 Delete the third item in the queue.
queue -m 6 4 Move the sixth item in the queue before the fourth.
queue -m "get*zip" 1 Move all commands matching "get*zip" to the beginning of the queue. (The
order of the items is preserved.)
queue -d "get*zip" Delete all commands matching "get*zip".

quote cmd

For FTP - send the command uninterpreted. Use with caution - it can lead to unknown remote state and thus
will cause reconnect. You cannot be sure that any change of remote state because of quoted command is
solid - it can be reset by reconnect at any time.

For HTTP - specific to HTTP action. Syntax: ``quote <command> [<args>]''. Command may be ``set-cookie''
or ``post''.
open http://www.site.net
quote set-cookie "variable=value; othervar=othervalue"
set http:post-content-type application/x-www-form-urlencoded
quote post /cgi-bin/script.cgi "var=value&othervar=othervalue" > local_file

For FISH - send the command uninterpreted. This can be used to execute arbitrary commands on server. The
command must not take input or print ### at new line beginning. If it does, the protocol will become out
of sync.
open fish://server
quote find -name \*.zip

reget rfile [-o lfile]

Same as `get -c'.

rels [args]

Same as `ls', but ignores the cache.

renlist [args]

Same as `nlist', but ignores the cache.

repeat [OPTS] [[-d] delay] [command]

Repeat specified command with a delay between iterations. Default delay is one second, default command
is empty.

-c <count> maximum number of iterations
-d <delay> delay between iterations
--while-ok stop when command exits with non-zero code
--until-ok stop when command exits with zero code
--weak stop when lftp moves to background.

Examples:
repeat at tomorrow -- mirror
repeat 1d mirror

reput lfile [-o rfile]

Same as `put -c'.

rm [-r] [-f] files

Remove remote files. Does not expand wildcards, use mrm for that. -r is for recursive directory remove.
Be careful, if something goes wrong you can lose files. -f suppress error messages.

rmdir dir(s)

Remove remote directories.

scache [session]

List cached sessions or switch to specified session.

set [var [val]]

Set variable to given value. If the value is omitted, unset the variable. Variable name has format
``name/closure'', where closure can specify exact application of the setting. See below for details. If
set is called with no variable then only altered settings are listed. It can be changed by options:

-a list all settings, including default values
-d list only default values, not necessary current ones

site site_cmd

Execute site command site_cmd and output the result. You can redirect its output.

sleep interval

Sleep given time interval and exit. Interval is in seconds by default, but can be suffixed with 'm', 'h',
'd' for minutes, hours and days respectively. See also at.

slot [name]

Select specified slot or list all slots allocated. A slot is a connection to a server, somewhat like a
virtual console. You can create multiple slots connected to different servers and switch between them.
You can also use slot:name as a pseudo-URL evaluating to that slot location.

Default readline binding allows quick switching between slots named 0-9 using Meta-0 - Meta-9 keys (often
you can use Alt instead of Meta).

source file
source -e command

Execute commands recorded in file file or returned by specified external command.
source ~/.lftp/rc
source -e echo help

suspend

Stop lftp process. Note that transfers will be also stopped until you continue the process with shell's
fg or bg commands.

torrent [OPTS] torrent-files...

Start BitTorrent process for the given torrent-files, which can be a local file, URL, magnet link or
plain info_hash written in hex. Local wildcards are expanded. Existing files are first validated unless
--force-valid option is given. Missing pieces are downloaded. Files are stored in specified directory or
current working directory by default. Seeding continues until ratio reachs torrent:stop-on-ratio setting
or time of torrent:seed-max-time outs.

Options:
-O <directory> specifies base directory where files should be placed
--force-valid skip file validation (if you are sure they are ok).
--dht-bootstrap=<node> bootstrap DHT by sending a query to specified node. E.g.
dht.transmissionbt.com:6881. This option should be used just once to fill
local node cache.

user user [pass]
user URL [pass]

Use specified info for remote login. If you specify an URL with user name, the entered password will be
cached so that future URL references can use it.

version

Print lftp version.

wait [jobno]
wait all

Wait for specified job to terminate. If jobno is omitted, wait for last backgrounded job.

`wait all' waits for all jobs termination.

zcat files

Same as cat, but filter each file through zcat. (See also cat, more and zmore)

zmore files

Same as more, but filter each file through zcat. (See also cat, zcat and more)

Settings
On startup, lftp executes ~/.lftprc and ~/.lftp/rc. You can place aliases and `set' commands there. Some
people prefer to see full protocol debug, use `debug' to turn the debug on.

There is also a system-wide startup file in /etc/lftp.conf. It can be in different directory, see FILES
section.

lftp has the following settable variables (you can also use `set -a' to see all variables and their
values):

bmk:save-passwords (boolean)
save plain text passwords in ~/.lftp/bookmarks on `bookmark add' command. Off by default.

cache:cache-empty-listings (boolean)
When false, empty listings are not cached.

cache:enable (boolean)
When false, cache is disabled.

cache:expire (time interval)
Positive cache entries expire in this time interval.

cache:expire-negative (time interval)
Negative cache entries expire in this time interval.

cache:size (number)
Maximum cache size. When exceeded, oldest cache entries will be removed from cache.

cmd:at-exit (string)
the commands in string are executed before lftp exits or moves to background.

cmd:at-exit-bg (string)
the commands in string are executed before backgrounded lftp exits.

cmd:at-exit-fg (string)
the commands in string are executed before foreground lftp exits.

cmd:at-background (string)
the commands in string are executed before lftp moves to background.

cmd:at-terminate (string)
the commands in string are executed before lftp terminates (either backgrounded or foreground).

cmd:at-finish (string)
the commands in string are executed once when all jobs are done.

cmd:at-queue-finish (string)
the commands in string are executed once when all jobs in a queue are done.

cmd:cls-completion-default (string)
default cls options for displaying completion choices. For example, to make completion listings
show file sizes, set cmd:cls-completion-default to `-s'.

cmd:cls-default (string)
default cls command options. They can be overridden by explicitly given options.

cmd:cls-exact-time (boolean)
when true, cls would try to get exact file modification time even if it means more requests to the
server.

cmd:csh-history (boolean)
enables csh-like history expansion.

cmd:default-protocol (string)
The value is used when `open' is used with just host name without protocol. Default is `ftp'.

cmd:fail-exit (boolean)
if true, exit when an unconditional (without || and && at begin) command fails.

cmd:interactive (tri-boolean)
when true, lftp acts interactively, handles terminal signals and outputs some extra messages.
Default is auto and depends on stdin being a terminal.

cmd:long-running (seconds)
time of command execution, which is considered as `long' and a beep is done before next prompt. 0
means off.

cmd:ls-default (string)
default ls argument

cmd:move-background (boolean)
when false, lftp refuses to go to background when exiting. To force it, use `exit bg'.

cmd:move-background-detach (boolean)
when true (default), lftp detaches itself from the control terminal when moving to background, it
is possible to attach back using `attach' command; when false, lftp tricks the shell to move lftp
to background process group and continues to run, then fg shell command brings lftp back to
foreground unless it has done all jobs and terminated.

cmd:prompt (string)
The prompt. lftp recognizes the following backslash-escaped special characters that are decoded as
follows:
\@ insert @ if current user is not default
\a an ASCII bell character (07)
\e an ASCII escape character (033)
\h the hostname you are connected to
\n newline
\s the name of the client (lftp)
\S current slot name
\u the username of the user you are logged in as
\U the URL of the remote site (e.g., ftp://g437.ub.gu.se/home/james/src/lftp)
\v the version of lftp (e.g., 2.0.3)
\w the current working directory at the remote site
\W the base name of the current working directory at the remote site
\nnn the character corresponding to the octal number nnn
\\ a backslash
\? skips next character if previous substitution was empty.
\[ begin a sequence of non-printing characters, which could be used to embed a terminal
control sequence into the prompt
\] end a sequence of non-printing characters

cmd:parallel (number)
Number of jobs run in parallel in non-interactive mode. For example, this may be useful for
scripts with multiple `get' commands. Note that setting this to a value greater than 1 changes
conditional execution behaviour, basically makes it inconsistent.

cmd:queue-parallel (number)
Number of jobs run in parallel in a queue.

cmd:remote-completion (boolean)
a boolean to control whether or not lftp uses remote completion. When true, Tab key guesses if the
word being completed should be a remote file name. Meta-Tab does remote completion always. So you
can force remote completion with Meta-Tab when cmd:remote-completion is false or when the guess is
wrong.

cmd:save-cwd-history (boolean)
when true, lftp saves last CWD of each site to ~/.lftp/cwd_history, allowing to do ``cd -'' after
lftp restart. Default is true.

cmd:save-rl-history (boolean)
when true, lftp saves readline history to ~/.lftp/rl_history on exit. Default is true.

cmd:show-status (booleam)
when false, lftp does not show status line on terminal. Default is true.

cmd:set-term-status (boolean)
when true, lftp updates terminal status if supported (e.g. xterm). The closure for this setting is
the terminal type from TERM environment variable.

cmd:status-interval (timeinterval)
the time interval between status updates.

cmd:stifle-rl-history (number)
the number of lines to keep in readline history.

cmd:term-status (string)
the format string to use to display terminal status. The closure for this setting is the terminal
type from TERM environment variable. Default uses ``tsl'' and ``fsl'' termcap values.

The following escapes are supported:
\a bell
\e escape
\n new line
\s "lftp"
\v lftp version
\T the status string

cmd:time-style (string)
This setting is the default value for cls --time-style option.

cmd:trace (boolean)
when true, lftp prints the commands it executes (like sh -x).

cmd:verify-host (boolean)
if true, lftp resolves host name immediately in `open' command. It is also possible to skip the
check for a single `open' command if `&' is given, or if ^Z is pressed during the check.

cmd:verify-path (boolean)
if true, lftp checks the path given in `cd' command. It is also possible to skip the check for a
single `cd' command if `&' is given, or if ^Z is pressed during the check. Examples:
set cmd:verify-path/hftp://* false
cd directory &

cmd:verify-path-cached (boolean)
When false, `cd' to a directory known from cache as existent will succeed immediately. Otherwise
the verification will depend on cmd:verify-path setting.

color:use-color (tri-boolean)
when true, cls command and completion output colored file listings according to color:dir-colors
setting. When set to auto, colors are used when output is a terminal.

color:dir-colors (string)
file listing color description. By default the value of LS_COLORS environment variable is used.
See dircolors(1).

dns:SRV-query (boolean)
query for SRV records and use them before gethostbyname. The SRV records are only used if port is
not explicitly specified. See RFC2052 for details.

dns:cache-enable (boolean)
enable DNS cache. If it is off, lftp resolves host name each time it reconnects.

dns:cache-expire (time interval)
time to live for DNS cache entries. It has format <number><unit>+, e.g. 1d12h30m5s or just 36h.
To disable expiration, set it to `inf' or `never'.

dns:cache-size (number)
maximum number of DNS cache entries.

dns:fatal-timeout (time interval)
limit the time for DNS queries. If DNS server is unavailable too long, lftp will fail to resolve a
given host name. Set to `never' to disable.

dns:order (list of protocol names)
sets the order of DNS queries. Default is ``inet6 inet'' which means first look up address in
inet6 family, then inet and use them in that order. To disable inet6 (AAAA) lookup, set this
variable to ``inet''.

dns:use-fork (boolean)
if true, lftp will fork before resolving host address. Default is true.

dns:max-retries (number)
If zero, there is no limit on the number of times lftp will try to lookup an address. If > 0,
lftp will try only this number of times to look up an address of each address family in dns:order.

file:charset (string)
local character set. It is set from current locale initially.

fish:charset (string)
the character set used by fish server in requests, replies and file listings. Default is empty
which means the same as local.

fish:connect-program (string)
the program to use for connecting to remote server. It should support `-l' option for user name,
`-p' for port number. Default is `ssh -a -x'. You can set it to `rsh', for example.

fish:shell (string)
use specified shell on server side. Default is /bin/sh. On some systems, /bin/sh exits when doing
cd to a non-existent directory. lftp can handle that but it has to reconnect. Set it to /bin/bash
for such systems if bash is installed.

ftp:acct (string)
Send this string in ACCT command after login. The result is ignored. The closure for this setting
has format user@host.

ftp:anon-pass (string)
sets the password used for anonymous ftp access authentication. Default is "lftp@".

ftp:anon-user (string)
sets the user name used for anonymous ftp access authentication. Default is "anonymous".

ftp:auto-sync-mode (regex)
if first server message matches this regex, turn on sync mode for that host.

ftp:charset (string)
the character set used by ftp server in requests, replies and file listings. Default is empty
which means the same as local. This setting is only used when the server does not support UTF8.

ftp:client (string)
the name of ftp client to send with CLNT command, if supported by server. If it is empty, then no
CLNT command will be sent.

ftp:bind-data-socket (boolean)
bind data socket to the interface of control connection (in passive mode). Default is true,
exception is the loopback interface.

ftp:fix-pasv-address (boolean)
if true, lftp will try to correct address returned by server for PASV command in case when server
address is in public network and PASV returns an address from a private network. In this case lftp
would substitute server address instead of the one returned by PASV command, port number would not
be changed. Default is true.

ftp:fxp-passive-source (boolean)
if true, lftp will try to set up source ftp server in passive mode first, otherwise destination
one. If first attempt fails, lftp tries to set them up the other way. If the other disposition
fails too, lftp falls back to plain copy. See also ftp:use-fxp.

ftp:home (string)
Initial directory. Default is empty string which means auto. Set this to `/' if you don't like the
look of %2F in ftp URLs. The closure for this setting has format user@host.

ftp:ignore-pasv-address (boolean)
If true, lftp uses control connection address instead of the one returned in PASV reply for data
connection. This can be useful for broken NATs. Default is false.

ftp:list-empty-ok (boolean)
if set to false, empty lists from LIST command will be treated as incorrect, and another method
(NLST) will be used.

ftp:list-options (string)
sets options which are always appended to LIST command. It can be useful to set this to `-a' if
server does not show dot (hidden) files by default. Default is empty.

ftp:nop-interval (seconds)
delay between NOOP commands when downloading tail of a file. This is useful for ftp servers which
send "Transfer complete" message before flushing data transfer. In such cases NOOP commands can
prevent connection timeout.

ftp:passive-mode (boolean)
sets passive ftp mode. This can be useful if you are behind a firewall or a dumb masquerading
router. In passive mode lftp uses PASV command, not the PORT command which is used in active mode.
In passive mode lftp itself makes the data connection to the server; in active mode the server
connects to lftp for data transfer. Passive mode is the default.

ftp:port-ipv4 (ipv4 address)
specifies an IPv4 address to send with PORT command. Default is empty which means to send the
address of local end of control connection.

ftp:port-range (from-to)
allowed port range for active mode. Format is min-max, or `full' or `any' to indicate any port.
Default is `full'.

ftp:prefer-epsv (boolean)
use EPSV as preferred passive mode. Default is `false'.

ftp:proxy (URL)
specifies ftp proxy to use. To disable proxy set this to empty string. Note that it is an ftp
proxy which uses ftp protocol, not ftp over http. Default value is taken from environment variable
ftp_proxy if it starts with ``ftp://''. If your ftp proxy requires authentication, specify user
name and password in the URL. If ftp:proxy starts with http:// then hftp protocol (ftp over http
proxy) is used instead of ftp automatically.

ftp:proxy-auth-type (string)
When set to ``joined'', lftp sends ``user@proxy_user@ftp.example.org'' as user name to proxy, and
``password@proxy_password'' as password.

When set to ``joined-acct'', lftp sends ``user@ftp.example.org proxy_user'' (with space) as user
name to proxy. The site password is sent as usual and the proxy password is expected in the
following ACCT command.

When set to ``open'', lftp first sends proxy user and proxy password and then ``OPEN
ftp.example.org'' followed by ``USER user''. The site password is then sent as usual.

When set to ``user'' (default), lftp first sends proxy user and proxy password and then
``user@ftp.example.org'' as user name. The site password is then sent as usual.

When set to ``proxy-user@host'', lftp first sends ``USER proxy_user@ftp.example.org'', then proxy
password. The site user and password are then sent as usual.

ftp:rest-list (boolean)
allow usage of REST command before LIST command. This might be useful for large directories, but
some ftp servers silently ignore REST before LIST.

ftp:rest-stor (boolean)
if false, lftp will not try to use REST before STOR. This can be useful for some buggy servers
which corrupt (fill with zeros) the file if REST followed by STOR is used.

ftp:retry-530 (regex)
Retry on server reply 530 for PASS command if text matches this regular expression. This setting
should be useful to distinguish between overloaded server (temporary condition) and incorrect
password (permanent condition).

ftp:retry-530-anonymous (regex)
Additional regular expression for anonymous login, like ftp:retry-530.

ftp:site-group (string)
Send this string in SITE GROUP command after login. The result is ignored. The closure for this
setting has format user@host.

ftp:skey-allow (boolean)
allow sending skey/opie reply if server appears to support it. On by default.

ftp:skey-force (boolean)
do not send plain text password over the network, use skey/opie instead. If skey/opie is not
available, assume failed login. Off by default.

ftp:ssl-allow (boolean)
if true, try to negotiate SSL connection with ftp server for non-anonymous access. Default is
true. This and other ssl settings are only available if lftp was compiled with an ssl/tls library.

ftp:ssl-auth (string)
the argument for AUTH command, can be one of SSL, TLS, TLS-P, TLS-C. See RFC4217 for
explanations. By default TLS or SSL will be used, depending on FEAT reply.

ftp:ssl-data-use-keys (boolean)
if true, lftp loads ssl:key-file for protected data connection too. When false, it does not, and
the server can match data and control connections by session ID. Default is true.

ftp:ssl-force (boolean)
if true, refuse to send password in clear when server does not support SSL. Default is false.

ftp:ssl-protect-data (boolean)
if true, request ssl connection for data transfers. This is cpu-intensive but provides privacy.
Default is false.

ftp:ssl-protect-fxp (boolean)
if true, request ssl connection for data transfer between two ftp servers in FXP mode. CPSV or
SSCN command will be used in that case. If ssl connection fails for some reason, lftp would try
unprotected FXP transfer unless ftp:ssl-force is set for any of the two servers. Default is false.

ftp:ssl-protect-list (boolean)
if true, request ssl connection for file list transfers. Default is true.

ftp:ssl-use-ccc (boolean)
if true, lftp would issue CCC command after logon, thus disable ssl protection layer on control
connection.

ftp:stat-interval (time interval)
interval between STAT commands. Default is 1 second.

ftp:strict-multiline (boolean)
when true, lftp strictly checks for multiline reply format (expects it to end with the same code
as it started with). When false, this check is relaxed.

ftp:sync-mode (boolean)
if true, lftp will send one command at a time and wait for response. This might be useful if you
are using a buggy ftp server or router. When it is off, lftp sends a pack of commands and waits
for responses - it speeds up operation when round trip time is significant. Unfortunately it does
not work with all ftp servers and some routers have troubles with it, so it is on by default.

ftp:timezone (string)
Assume this timezone for time in listings returned by LIST command. This setting can be GMT
offset [+|-]HH[:MM[:SS]] or any valid TZ value (e.g. Europe/Moscow or MSK-3MSD,M3.5.0,M10.5.0/3).
The default is GMT. Set it to an empty value to assume local timezone specified by environment
variable TZ.

ftp:trust-feat (string)
When true, assume that FEAT returned data are correct and don't use common protocol extensions
like SIZE, MDTM, REST if they are not listed. Default is false.

ftp:use-abor (boolean)
if false, lftp does not send ABOR command but closes data connection immediately.

ftp:use-allo (boolean)
when true (default), lftp sends ALLO command before uploading a file.

ftp:use-feat (boolean)
when true (default), lftp uses FEAT command to determine extended features of ftp server.

ftp:use-fxp (boolean)
if true, lftp will try to set up direct connection between two ftp servers.

ftp:use-hftp (boolean)
when ftp:proxy points to an http proxy, this setting selects hftp method (GET, HEAD) when true,
and CONNECT method when false. Default is true.

ftp:use-ip-tos (boolean)
when true, lftp uses IPTOS_LOWDELAY for control connection and IPTOS_THROUGHPUT for data
connections.

ftp:lang (boolean)
the language selected with LANG command, if supported as indicated by FEAT response. Default is
empty which means server default.

ftp:use-mdtm (boolean)
when true (default), lftp uses MDTM command to determine file modification time.

ftp:use-mdtm-overloaded (boolean)
when true, lftp uses two argument MDTM command to set file modification time on uploaded files.
Default is false.

ftp:use-site-idle (boolean)
when true, lftp sends `SITE IDLE' command with net:idle argument. Default is false.

ftp:use-site-utime (boolean)
when true, lftp sends 5-argument `SITE UTIME' command to set file modification time on uploaded
files. Default is true.

ftp:use-site-utime2 (boolean)
when true, lftp sends 2-argument `SITE UTIME' command to set file modification time on uploaded
files. Default is true. If 5-argument `SITE UTIME' is also enabled, 2-argument command is tried
first.

ftp:use-size (boolean)
when true (default), lftp uses SIZE command to determine file size.

ftp:use-stat (boolean)
if true, lftp sends STAT command in FXP mode transfer to know how much data has been transferred.
See also ftp:stat-interval. Default is true.

ftp:use-stat-for-list (boolean)
when true, lftp uses STAT instead of LIST command. By default `.' is used as STAT argument. Using
STAT, lftp avoids creating data connection for directory listing. Some servers require special
options for STAT, use ftp:list-options to specify them (e.g. -la).

ftp:use-telnet-iac (boolean)
when true (default), lftp uses TELNET IAC command and follows TELNET protocol as specified in
RFC959. When false, it does not follow TELNET protocol and thus does not double 255 (0xFF, 0377)
character and does not prefix ABOR and STAT commands with TELNET IP+SYNCH signal.

ftp:use-tvfs (tri-boolean)
When set to auto, usage of TVFS feature depends on FEAT server reply. Otherwise this setting tells
whether use it or not. In short, if a server supports TVFS feature then it uses unix-like paths.

ftp:use-utf8 (boolean)
if true, lftp sends `OPTS UTF8 ON' to the server to activate UTF-8 encoding (if supported).
Disable it if the file names have a different encoding and the server has a trouble with it.

ftp:use-quit (boolean)
if true, lftp sends QUIT before disconnecting from ftp server. Default is true.

ftp:verify-address (boolean)
verify that data connection comes from the network address of control connection peer. This can
possibly prevent data connection spoofing which can lead to data corruption. Unfortunately, this
can fail for certain ftp servers with several network interfaces, when they do not set outgoing
address on data socket, so it is disabled by default.

ftp:verify-port (boolean)
verify that data connection has port 20 (ftp-data) on its remote end. This can possibly prevent
data connection spoofing by users of remote host. Unfortunately, too many windows and even unix
ftp servers forget to set proper port on data connection, thus this check is off by default.

ftp:web-mode (boolean)
disconnect after closing data connection. This can be useful for totally broken ftp servers.
Default is false.

ftps:initial-prot (string)
specifies initial PROT setting for FTPS connections. Should be one of: C, S, E, P, or empty.
Default is empty which means unknown, so that lftp will use PROT command unconditionally. If PROT
command turns out to be unsupported, then Clear mode would be assumed.

hftp:cache (boolean)
allow server/proxy side caching for ftp-over-http protocol.

hftp:cache-control (string)
specify corresponding HTTP request header.

hftp:proxy (URL)
specifies http proxy for ftp-over-http protocol (hftp). The protocol hftp cannot work without a
http proxy, obviously. Default value is taken from environment variable ftp_proxy if it starts
with ``http://'', otherwise from environment variable http_proxy. If your ftp proxy requires
authentication, specify user name and password in the URL.

hftp:use-allprop (boolean)
if true, lftp will send `<allprop/>' request body in `PROPFIND' requests, otherwise it will send
an empty request body.

hftp:use-authorization (boolean)
if set to off, lftp will send password as part of URL to the proxy. This may be required for some
proxies (e.g. M-soft). Default is on, and lftp will send password as part of Authorization header.

hftp:use-head (boolean)
if set to off, lftp will try to use `GET' instead of `HEAD' for hftp protocol. While this is
slower, it may allow lftp to work with some proxies which don't understand or mishandle ``HEAD
ftp://'' requests.

hftp:use-mkcol (boolean)
if set to off, lftp will try to use `PUT' instead of `MKCOL' to create directories with hftp
protocol. Default is off.

hftp:use-propfind (boolean)
if set to off, lftp will not try to use `PROPFIND' to get directory contents with hftp protocol
and use `GET' instead. Default is off.

hftp:use-type (boolean)
If set to off, lftp won't try to append `;type=' to URLs passed to proxy. Some broken proxies
don't handle it correctly. Default is on.

http:accept, http:accept-charset, http:accept-language (string)
specify corresponding HTTP request headers.

http:authorization (string)
the authorization to use by default, when no user is specified. The format is ``user:password''.
Default is empty which means no authorization.

http:cache (boolean)
allow server/proxy side caching.

http:cache-control (string)
specify corresponding HTTP request header.

http:cookie (string)
send this cookie to server. A closure is useful here:
set cookie/www.somehost.com "param=value"

http:post-content-type (string)
specifies value of Content-Type http request header for POST method. Default is ``application/x-
www-form-urlencoded''.

http:proxy (URL)
specifies http proxy. It is used when lftp works over http protocol. Default value is taken from
environment variable http_proxy. If your proxy requires authentication, specify user name and
password in the URL.

http:put-method (PUT or POST)
specifies which http method to use on put.

http:put-content-type (string)
specifies value of Content-Type http request header for PUT method.

http:referer (string)
specifies value for Referer http request header. Single dot `.' expands to current directory URL.
Default is `.'. Set to empty string to disable Referer header.

http:set-cookies (boolean)
if true, lftp modifies http:cookie variables when Set-Cookie header is received.

http:use-allprop (boolean)
if true, lftp will send `<allprop/>' request body in `PROPFIND' requests, otherwise it will send
an empty request body.

http:use-mkcol (boolean)
if set to off, lftp will try to use `PUT' instead of `MKCOL' to create directories with http
protocol. Default is on.

http:use-propfind (boolean)
if set to off, lftp will not try to use `PROPFIND' to get directory contents with http protocol
and use `GET' instead. Default is on.

http:user-agent (string)
the string lftp sends in User-Agent header of HTTP request.

https:proxy (string)
specifies https proxy. Default value is taken from environment variable https_proxy.

mirror:dereference (boolean)
when true, mirror will dereference symbolic links by default. You can override it by
--no-dereference option. Default if false.

mirror:exclude-regex (regex)
specifies default exclusion pattern. You can override it by --include option.

mirror:include-regex (regex)
specifies default inclusion pattern. It is used just after mirror:exclude-regex is applied. It is
never used if mirror:exclude-regex is empty.

mirror:no-empty-dirs (boolean)
when true, mirror doesn't create empty directories (like --no-empty-dirs option).

mirror:order (list of patterns)
specifies order of file transfers. E.g. setting this to "*.sfv *.sum" makes mirror to transfer
files matching *.sfv first, then ones matching *.sum and then all other files. To process
directories after other files, add "*/" to end of pattern list.

mirror:parallel-directories (boolean)
if true, mirror will start processing of several directories in parallel when it is in parallel
mode. Otherwise, it will transfer files from a single directory before moving to other
directories.

mirror:parallel-transfer-count (number)
specifies number of parallel transfers mirror is allowed to start. Default is 1. You can override
it with --parallel option.

mirror:set-permissions (boolean)
When set to off, mirror won't try to copy file and directory permissions. You can override it by
--perms option. Default is on.

mirror:skip-noaccess (boolean)
when true, mirror does not try to download files which are obviously inaccessible by the
permission mask. Default is false.

mirror:use-pget-n (number)
specifies -n option for pget command used to transfer every single file under mirror. Default is 1
which disables pget.

module:path (string)
colon separated list of directories to look for modules. Can be initialized by environment
variable LFTP_MODULE_PATH. Default is `PKGLIBDIR/VERSION:PKGLIBDIR'.

net:connection-limit (number)
maximum number of concurrent connections to the same site. 0 means unlimited.

net:connection-takeover (boolean)
if true, foreground connections have priority over background ones and can interrupt background
transfers to complete a foreground operation.

net:idle (time interval)
disconnect from server after this idle time. Default is 3 minutes.

net:limit-rate (bytes per second)
limit transfer rate on data connection. 0 means unlimited. You can specify two numbers separated
by colon to limit download and upload rate separately. Suffixes are supported, e.g. 100K means
102400.

net:limit-max (bytes)
limit accumulating of unused limit-rate. 0 means twice of limit-rate.

net:limit-total-rate (bytes per second)
limit transfer rate of all connections in sum. 0 means unlimited. You can specify two numbers
separated by colon to limit download and upload rate separately. Note that sockets have receive
buffers on them, this can lead to network link load higher than this rate limit just after
transfer beginning. You can try to set net:socket-buffer to relatively small value to avoid this.

net:limit-total-max (bytes)
limit accumulating of unused limit-total-rate. 0 means twice of limit-total-rate.

net:max-retries (number)
the maximum number of sequential tries of an operation without success. 0 means unlimited. 1
means no retries.

net:no-proxy (string)
contains comma separated list of domains for which proxy should not be used. Default is taken
from environment variable no_proxy.

net:persist-retries (number)
ignore this number of hard errors. Useful to login to buggy ftp servers which reply 5xx when there
is too many users.

net:reconnect-interval-base (seconds)
sets the base minimal time between reconnects. Actual interval depends on net:reconnect-interval-
multiplier and number of attempts to perform an operation.

net:reconnect-interval-max (seconds)
sets maximum reconnect interval. When current interval after multiplication by net:reconnect-
interval-multiplier reachs this value (or exceeds it), it is reset back to net:reconnect-interval-
base.

net:reconnect-interval-multiplier (real number)
sets multiplier by which base interval is multiplied each time new attempt to perform an operation
fails. When the interval reachs maximum, it is reset to base value. See net:reconnect-interval-
base and net:reconnect-interval-max.

net:socket-bind-ipv4 (ipv4 address)
bind all IPv4 sockets to specified address. This can be useful to select a specific network
interface to use. Default is empty which means not to bind IPv4 sockets, operating system will
choose an address automatically using routing table.

net:socket-bind-ipv6 (ipv6 address)
the same for IPv6 sockets.

net:socket-buffer (bytes)
use given size for SO_SNDBUF and SO_RCVBUF socket options. 0 means system default.

net:socket-maxseg (bytes)
use given size for TCP_MAXSEG socket option. Not all operating systems support this option, but
linux does.

net:timeout (time interval)
sets the network protocol timeout.

pget:default-n (number)
default number of chunks to split the file to in pget.

pget:save-status (time interval)
save pget transfer status this often. Set to `never' to disable saving of the status file. The
status is saved to a file with suffix .lftp-pget-status.

sftp:charset (string)
the character set used by sftp server in file names and file listings. Default is empty which
means the same as local. This setting is only used for sftp protocol version prior to 4. Version 4
and later always use UTF-8.

sftp:connect-program (string)
the program to use for connecting to remote server. It should support `-l' option for user name,
`-p' for port number. Default is `ssh -a -x'. You can set it to `rsh', for example.

sftp:max-packets-in-flight (number)
The maximum number of unreplied packets in flight. If round trip time is significant, you should
increase this and size-read/size-write. Default is 16.

sftp:protocol-version (number)
The protocol number to negotiate. Default is 4. The actual protocol version used depends on
server.

sftp:server-program (string)
The server program implementing SFTP protocol. If it does not contain a slash `/', it is
considered a ssh2 subsystem and -s option is used when starting connect-program. Default is
`sftp'. You can use rsh as transport level protocol like this:
set sftp:connect-program rsh
set sftp:server-program /usr/libexec/openssh/sftp-server
Similarly you can run sftp over ssh1.

sftp:size-read (number)
Block size for reading. Default is 0x8000.

sftp:size-write (number)
Block size for writing. Default is 0x8000.

ssl:ca-file (path to file)
use specified file as Certificate Authority certificate.

ssl:ca-path (path to directory)
use specified directory as Certificate Authority certificate repository (OpenSSL only).

ssl:check-hostname (boolean)
when true, lftp checks if the host name used to connect to the server corresponds to the host name
in its certificate.

ssl:crl-file (path to file)
use specified file as Certificate Revocation List certificate.

ssl:crl-path (path to directory)
use specified directory as Certificate Revocation List certificate repository (OpenSSL only).

ssl:key-file (path to file)
use specified file as your private key.

ssl:cert-file (path to file)
use specified file as your certificate.

ssl:use-sni (boolean)
when true, use Server Name Indication (SNI) TLS extension.

ssl:verify-certificate (boolean)
if set to yes, then verify server's certificate to be signed by a known Certificate Authority and
not be on Certificate Revocation List.

torrent:ip (ipv4 address)
IP address to send to the tracker. Specify it if you are using an http proxy.

torrent:ipv6 (ipv6 address)
IPv6 address to send to the tracker. By default, first found global unicast address is used.

torrent:max-peers (number)
maximum number of peers for a torrent. Least used peers are removed to maintain this limit.

torrent:port-range (from-to)
port range to accept connections on. A single port is selected when a torrent starts.

torrent:retracker (URL)
explicit retracker URL, e.g. `http://retracker.local/announce'.

torrent:seed-max-time (time interval)
maximum seed time. After this period of time a complete torrent shuts down independently of ratio.
It can be set to infinity if needed.

torrent:seed-min-peers (number)
minimum number of peers when the torrent is complete. If there are less, new peers are actively
searched for.

torrent:stop-on-ratio (real number)
torrent stops when it's complete and ratio reached this number.

torrent:use-dht (boolean)
when true, DHT is used.

xfer:clobber (boolean)
if this setting is off, get commands will not overwrite existing files and generate an error
instead.

xfer:destination-directory (path or URL to directory)
This setting is used as default -O option for get and mget commands. Default is empty, which
means current directory (no -O option).

xfer:disk-full-fatal (boolean)
when true, lftp aborts a transfer if it cannot write target file because of full disk or quota;
when false, lftp waits for disk space to be freed.

xfer:eta-period (seconds)
the period over which weighted average rate is calculated to produce ETA.

xfer:eta-terse (boolean)
show terse ETA (only high order parts). Default is true.

xfer:log (boolean)
when true, lftp logs transfers to a file from xfer:log-file setting.

xfer:log-file (pathtofile)
the file to log transfers to. Default is ~/.lftp/transfer_log.

xfer:make-backup (boolean)
when true, lftp renames pre-existing file adding ``~'' suffix instead of overwriting it.

xfer:max-redirections (number)
maximum number of redirections. This can be useful for downloading over HTTP. 0 prohibits
redirections.

xfer:rate-period (seconds)
the period over which weighted average rate is calculated to be shown.

xfer:verify (boolean)
when true, verify-command is launched after successful transfer to validate file integrity. Zero
exit code of that command should indicate correctness of the file.

xfer:verify-command (string)
the command to validate file integrity. The only argument is the path to the file.

The name of a variable can be abbreviated unless it becomes ambiguous. The prefix before `:' can be
omitted too. You can set one variable several times for different closures, and thus you can get a
particular settings for particular state. The closure is to be specified after variable name separated
with slash `/'.

The closure for `dns:', `net:', `ftp:', `http:', `hftp:' domain variables is currently just the host name
as you specify it in the `open' command (with some exceptions where closure is meaningless, e.g.
dns:cache-size). For some `cmd:' domain variables the closure is current URL without path. For other
variables it is not currently used. See examples in the sample lftp.conf.

Certain commands and settings take a time interval parameter. It has the format Nx[Nx...], where N is
time amount (floating point) and x is time unit: d - days, h - hours, m - minutes, s - seconds. Default
unit is second. E.g. 5h30m or 5.5h. Also the interval can be `infinity', `inf', `never', `forever' - it
means infinite interval. E.g. `sleep forever' or `set dns:cache-expire never'.

Boolean settings can be one of (true, on, yes, 1, +) for a True value or one of (false, off, no, 0, -)
for a False value.

Tri-boolean settings have either a boolean value or `auto'.

Integer settings can have a suffix: k - kibi, m - mebi, g - gigi, etc. They can also have a prefix: 0 -
octal, 0x - hexadecimal.

FTP asynchronous mode (pipelining)
Lftp can speed up ftp operations by sending several commands at once and then checking all the responses.
See ftp:sync-mode variable. Sometimes this does not work, thus synchronous mode is the default. You can
try to turn synchronous mode off and see if it works for you. It is known that some network software
dealing with address translation works incorrectly in the case of several FTP commands in one network
packet.

RFC959 says: ``The user-process sending another command before the completion reply would be in violation
of protocol; but server-FTP processes should queue any commands that arrive while a preceding command is
in progress''. Also, RFC1123 says: ``Implementors MUST NOT assume any correspondence between READ
boundaries on the control connection and the Telnet EOL sequences (CR LF).'' and ``a single READ from the
control connection may include more than one FTP command''.

So it must be safe to send several commands at once, which speeds up operation a lot and seems to work
with all Unix and VMS based ftp servers. Unfortunately, windows based servers often cannot handle several
commands in one packet, and so cannot some broken routers.

OPTIONS

       -d     Switch on debugging mode.

       -e commands
              Execute given commands and don't exit.

       -p port
              Use the given port to connect.

       -u user[,pass]
              Use the given username and password to connect. Remember to quote the  password  properly  in  the
              shell.   Also  note  that  it  is not secure to specify the password on command line, use ~/.netrc
              file.  Alternatively you can use ssh-based protocols with authorized keys, so you  don't  have  to
              enter a password.

       -f script_file
              Execute commands in the file and exit.  This option must be used alone without other arguments.

       -c commands
              Execute  the  given  commands  and exit. Commands can be separated with a semicolon, `&&' or `||'.
              Remember to quote the commands argument properly in the shell.  This option  must  be  used  alone
              without other arguments.

ENVIRONMENT VARIABLES

       The following environment variables are processed by lftp:

       HOME   Used for (local) tilde (`~') expansion

       SHELL  Used by the ! command to determine the shell to run.

       PAGER  This should be the name of the pager to use.  It's used by the more and zmore commands.

       http_proxy, https_proxy
              Used to set initial http:proxy, hftp:proxy and https:proxy variables.

       ftp_proxy
              Used  to  set  initial  ftp:proxy  or hftp:proxy variables, depending on URL protocol used in this
              environment variable.

       no_proxy
              Used to set initial net:no-proxy variable.

       LFTP_MODULE_PATH
              Used to set initial module:path variable.

       LFTP_HOME
              Used to locate the directory that stores user-specific configuration  files.   If  unset,  ~/.lftp
              will be used.

       LS_COLORS
              used to set initial color:dir-colors variable.

       XDG_CONFIG_DIR, XDG_DATA_DIR, XDG_CACHE_DIR
              Used to locate the directories for user-specific files when ~/.lftp (or $LFTP_HOME directory) does
              not  exist.  Defaults are ~/.config, ~/.local/share and ~/.cache respectively. The suffix /lftp is
              appended to make the full path to the directories.

FILES

       /etc/lftp.conf
              system-wide startup file. Actual location depends on --sysconfdir configure  option.  It  is  /etc
              when prefix is /usr, /usr/local/etc by default.

       ~/.lftp/rc, ~/.lftprc
              These files are executed on lftp startup after /etc/lftp.conf.

       ~/.lftp/log
              The file things are logged to when lftp moves into the background in nohup mode.

       ~/.lftp/transfer_log
              The  file  transfers  are  logged  to  when xfer:log setting is set to `yes'.  The location can be
              changed by xfer:log-file setting.

       ~/.lftp/bookmarks
              The file is used to store lftp's bookmarks.  See the bookmark command.

       ~/.lftp/cwd_history
              The file is used to store last working directories for each site visited.

       ~/.lftp/bg/
              The directory is used to store named sockets for backgrounded lftp processes.

       ~/.lftp/DHT/"
              The directory is used to store DHT id and nodes cache for IPv4 and IPv6.  File name suffix is  the
              host name.

       ~/.netrc
              The  file  is  consulted  to  get  default  login  and password to ftp server.  Passwords are also
              searched here if an URL with user name but with no password is used.

AUTHOR

       Alexander V. Lukyanov
       lav@yars.free.net

ACKNOWLEDGMENTS

       This  manual  page  was  originally  written  by  Christoph Lameter <clameter@debian.org>, for the Debian
       GNU/Linux system. The page was improved and updated later by Nicolas  Lichtmaier  <nick@Feedback.com.ar>,
       James Troup <J.J.Troup@comp.brad.ac.uk> and Alexander V. Lukyanov <lav@yars.free.net>.

                                                   15 Nov 2013                                           lftp(1)