unshar(1) User Commands unshar(1)NAMEunshar - unpack a shar archive
SYNOPSISunshar [-flag [value]]... [--opt-name[[=| ]value]]... [ file ... ]
DESCRIPTION
Unshar 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.
OPTIONS-d dir, --directory=dir
change directory to dir first.
Before unpacking any files, change the current directory to dir.
-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-pat, --split-at=split-pat
separate archives on split-pat lines.
With this option, unshar isolates each different shell archive
from the others which have been placed in the same file, unpack‐
ing 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.
For example, noticing that most `.signatures' have a double
hyphen ("--") on a line right before them, one can then some‐
times use --split-at=--. The signature will then be skipped,
along with the headers of the following message.
-e, --exit-0
split archives at "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".
-h, --help
Display usage information and exit.
-!, --more-help
Pass the extended usage information through a pager.
-R [rcfile], --save-opts[=rcfile]
Save the option state to rcfile. The default is the last con‐
figuration file listed in the OPTION PRESETS section, below.
-r rcfile, --load-opts=rcfile, --no-load-opts
Load options from rcfile. The no-load-opts form will disable
the loading of earlier 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 load‐
ing 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)
The operation failed or the command syntax was not valid.
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 ALSOshar(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) 1994-2013 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 (4.13.3) 06 Jan 2013 unshar(1)
