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UNSHAR(1)						UNSHAR(1)

NAME
       unshar ‐ unpack a shar file

SYNOPSIS
       unshar [ options ] [ file ... ]

DESCRIPTION
       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.

OPTIONS
       Options have a one letter version starting  with	 ‐  or	a
       long  version  starting	with ‐‐.  The exception is ‐‐help
       and ‐‐version, which does not have a short version.

       ‐‐version
	      Print the version number of the program on standard
	      output, then immediately exits.

       ‐‐help Print a help summary on standard output, then imme‐
	      diately exits.

       ‐d DIRECTORY  ‐‐directory=DIRECTORY
	      Change directory to DIRECTORY before unpacking  any
	      files.

       ‐c  ‐‐overwrite
	      Passed  as  an option to the shar file.  Many shell
	      archive scripts (including those produced by ‘shar’
	      3.40  and	 newer) accepts a ‐c argument to indicate
	      that existing files should be overwritten.

       ‐e  ‐‐exit‐0
	      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 ‐e is internally equivalent to ‐E "exit  0".

       ‐E STRING  ‐‐split‐at=STRING
	      This  option  works  like	 ‐e, 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

			September 10, 1995			1

UNSHAR(1)						UNSHAR(1)

	      sometimes	 use  ‘‐‐split‐at=‐‐’ 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.

       ‐f  ‐‐force
	      The same as ‐c.

SEE ALSO
       shar(1)

DIAGNOSTICS
       Any message from the shell may be displayed.

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

			September 10, 1995			2

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