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.TH UNSHAR 1 "September 10, 1995"
.SH NAME
unshar \- unpack a shar file
.SH SYNOPSIS
unshar [ options ] [ file ... ]
.SH DESCRIPTION
.PP
Unshar scans mail messages looking for the start of a shell archive. It
then passes the archive through a copy of the shell to unpack it. It
will accept multiple files. If no files are given, standard input is used.
.SH OPTIONS
.PP
Options have a one letter version starting with \- or a long version starting
with \-\-. The exception is \f2\-\-help\f1 and \f2\-\-version\f1,
which does not have a short version.
.IP "\f2\-\-version\f1"
Print the version number of the program on standard output,
then immediately exits.
.IP "\f2\-\-help\f1"
Print a help summary on standard output, then immediately exits.
.IP "\f2\-d\f1 DIRECTORY \f2\-\-directory=\f1DIRECTORY"
Change directory to DIRECTORY before unpacking any files.
.IP "\f2\-c\f1 \f2\-\-overwrite\f1"
Passed as an option to the shar file. Many shell archive scripts
(including those produced by `shar' 3.40 and newer) accepts a \f2\-c\f1
argument to indicate that existing files should be overwritten.
.IP "\f2\-e\f1 \f2\-\-exit-0\f1"
This option exists mainly for people who collect many shell
archives into a single mail folder. With this option, `unshar'
isolates each different shell archive from the others which have
been put in the same file, unpacking each in turn, from the
beginning of the file towards its end. Its proper operation
relies on the fact that many shar files are terminated by a
`exit 0' at the beginning of a line.
Option \f2\-e\f1 is internally equivalent to \f2\-E\f1 "exit 0".
.IP "\f2\-E\f1 STRING \f2\-\-split-at=\f1STRING"
This option works like \f2\-e\f1, but it allows you to specify the
string that separates archives if `exit 0' isn't appropriate.
For example, noticing that most `.signatures' have a `\-\-' on a
line right before them, one can sometimes use `\f2\-\-split-at\f1=\-\-' for
splitting shell archives which lack the `exit 0' line at end. The
signature will then be skipped altogether with the headers of the
following message.
.IP "\f2\-f\f1 \f2\-\-force\f1"
The same as \f2\-c\f1.
.SH SEE ALSO
shar(1)
.SH DIAGNOSTICS
Any message from the shell may be displayed.
.SH 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.
.SH REPORTING BUGS
Report bugs to <bug-gnu-utils@gnu.org>. Please put
.I sharutils
in the subject line. It helps to spot the message.
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