NAME

       snarf - Simple Non-interactive All-purpose Resource Fetcher

SYNOPSIS

       snarf [-avqprzm] URL [outfile] ...

DESCRIPTION

       Retrieves data from a variety of protocols, namely http, ftp, and gopher.

USAGE

       snarf  is  invoked  with any number of URLs and outfiles. If an outfile is not specified, snarf preserves
       the remote file name when saving.

       For example, snarf http://foo.bar.com/images/face.gif will retrieve the file ``face.gif''  to  the  local
       system.   In  the  event  that  there is no filename (the url ends in a slash), the data is retrieved and
       stored in the file index.html for http URLs, ftpindex.txt for ftp URLs,  or  gopherindex.txt  for  gopher
       URLs.

       Using a dash, "-", as the outfile causes snarf to send its output to stdout rather than a file.

       To  log  in  to  an  ftp  server  or  website  that  requires  a  username  and  password, use the syntax
       http://username:password@site.com/. If you omit the password, you will be prompted for it.

       Snarf has a built-in option to download the latest version of itself; simply run snarf LATEST.

   OPTIONS
       -a     Causes snarf to use "active" ftp. By default, snarf uses passive ftp, and, if the server does  not
              support it, falls back to active ftp. Using the -a option will avoid the initial passive attempt.

       -r     Resumes  an  interrupted  ftp  or http transfer by checking if there is a local file with the same
              name as the remote file, and starting the transfer at the end of the  local  file  and  continuing
              until  finished. This option only works with HTTP servers that understand HTTP/1.1 and ftp servers
              that support the REST command. snarf uses this option automatically if the outfile already exists.

       -n     Don't resume; ignore the outfile if it exists and re-transfer it in its entirety.

       -q     Don't print progress bars.

       -p     Forces printing of progress bars. Snarf has a compile-time option for whether progress bars  print
              by  default  or  not.  The  -p  option  overrides the -q option. In addition, if progress bars are
              enabled by default, snarf suppresses them when standard output is not a terminal.  Using  -p  will
              override this behavior.

       -v     Prints all messages that come from the server to stderr.

       -z     Send a user-agent string similar to what Netscape Navigator 4.0 uses.

       -m     Send a user-agent string similar to what Microsoft Internet Explorer uses.

       Each  option  only  affects  the  URL that immediately follows it. To have an option affect all URLs that
       follow it, use an uppercase letter for the option, e.g. -Q instead of -q.

ENVIRONMENT

       Snarf checks several environment variables when deciding what to use for a proxy. It  checks  a  service-
       specific variable first, then SNARF_PROXY, then PROXY.

       The service-specific variables are HTTP_PROXY, FTP_PROXY, and GOPHER_PROXY.

       Snarf also checks the SNARF_HTTP_USER_AGENT environment variable and will use it when reporting its user-
       agent string to an HTTP server. In the same spirit,  it  also  uses  the  SNARF_HTTP_REFERER  environment
       variable to spoof a Referer to the web server.

BUGS

       Bugs? What bugs? If you find 'em, report 'em.

AUTHOR

       Copyright (C) 2000 Zachary Beane (xach@xach.com)

                                                   17 Jun 2000                                          snarf(1)