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gunshar(1)                       User Commands                      gunshar(1)

NAME
       unshar - unpack a gshar archive

SYNOPSIS
       unshar [-flags] [-flag [value]] [--option-name[[=| ]value]] [<file>...]

       The operands that this program operates on may be specified either on
       the command line or read from standard input, one per line.  In that
       input, leading and trailing white space is stripped, blank lines are
       ignored.  Standard input may not be a terminal.

DESCRIPTION
       Gunshar scans the input files (typically email messages) looking for
       the start of a shell archive.  If no files are given, then standard
       input is processed instead.  It then passes each archive discovered
       through an invocation of the shell program to unpack it.

       This program will perform its function for every file named on the
       command line or every file named in a list read from stdin.  The
       arguments or input names must be pre-existing files.  The input list
       may contain comments, which are blank lines or lines beginning with a
       '#' character.

OPTIONS
       -d dir, --directory=dir
              unpack into the directory dir.

              The input file names are relative to the current directory when
              the program was started.  This option tells unshar to insert a
              cd <dir> commad at the start of the shar text written to the
              shell.

       -c, --overwrite
              overwrite any pre-existing files.

              This option is passed through as an option to the shar file.
              Many shell archive scripts accept a -c argument to indicate that
              existing files should be overwritten.

       -f, --force
              This is an alias for the --overwrite option.

       -E split-mark, --split-at=split-mark
              split input on split-mark lines.  The default split-mark for
              this option is:
                   exit 0

              With this option, unshar isolates each different shell archive
              from the others which have been placed in the same file,
              unpacking each in turn, from the beginning of the file to the
              end.  Its proper operation relies on the fact that many shar
              files are terminated by a readily identifiable string at the
              start of the last line.

              For example, noticing that most `.signatures' have a double
              hyphen ("--") on a line right before them, one can then
              sometimes use --split-at=--.  The signature will then be
              skipped, along with the headers of the following message.

       -e, --exit-0
              split input on "exit 0" lines.  This option must not appear in
              combination with any of the following options: split-at.

              Most shell archives end with a line consisting of simply "exit
              0".  This option is equivalent to (and conflicts with) --split-
              at="exit 0".

       -D, --debug
              debug the shell code.

              "set -x" will be emitted into the code the shell interprets.

       -h, --help
              Display usage information and exit.

       -!, --more-help
              Pass the extended usage information through a pager.

       -R [cfgfile], --save-opts [=cfgfile]
              Save the option state to cfgfile.  The default is the last
              configuration file listed in the OPTION PRESETS section, below.
              The command will exit after updating the config file.

       -r cfgfile, --load-opts=cfgfile, --no-load-opts
              Load options from cfgfile.  The no-load-opts form will disable
              the loading of earlier config/rc/ini files.  --no-load-opts is
              handled early, out of order.

       -v [{v|c|n --version [{v|c|n}]}]
              Output version of program and exit.  The default mode is `v', a
              simple version.  The `c' mode will print copyright information
              and `n' will print the full copyright notice.

OPTION PRESETS
       Any option that is not marked as not presettable may be preset by
       loading values from configuration ("RC" or ".INI") file(s).  The file
       "$HOME/.sharrc" will be used, if present.

FILES
       See OPTION PRESETS for configuration files.

EXIT STATUS
       One of the following exit values will be returned:

       0  (EXIT_SUCCESS)
              Successful program execution.

       1  (EXIT_FAILURE)
              There was an error in command usage.

       2  (EXIT_POPEN_PROBLEM)
              cannot spawn or write to a shell process

       3  (EXIT_CANNOT_CREATE)
              cannot create output file

       4  (EXIT_BAD_DIRECTORY)
              the working directory structure is invalid

       5  (EXIT_NOMEM)
              memory allocation failure

       6  (EXIT_INVALID)
              invalid input, does not contain a shar file

       66  (EX_NOINPUT)
              A specified configuration file could not be loaded.

       70  (EX_SOFTWARE)
              libopts had an internal operational error.  Please report it to
              autogen-users@lists.sourceforge.net.  Thank you.

SEE ALSO
       gshar(1)

AUTHORS
       The shar and unshar programs is the collective work of many authors.
       Many people contributed by reporting problems, suggesting various
       improvements or submitting actual code.  A list of these people is in
       the THANKS file in the sharutils distribution.

COPYRIGHT
       Copyright (C) 1994-2015 Free Software Foundation, Inc. all rights
       reserved.  This program is released under the terms of the GNU General
       Public License, version 3 or later.

BUGS
       Please put sharutils in the subject line for emailed bug reports.  It
       helps to spot the message.

       Please send bug reports to: bug-gnu-utils@gnu.org

NOTES
       This manual page was AutoGen-erated from the unshar option definitions.

GNU sharutils (4.15.2)            30 May 2015                       gunshar(1)