unshar

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 immediately
	      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 opera-
	      tion 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 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	 problems, suggesting various
       improvements or submitting actual code.	A list of these people is  in
       the THANKS file in the sharutils distribution.



			      September 10, 1995		    UNSHAR(1)