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CHECKBASHISMS(1)	    General Commands Manual	      CHECKBASHISMS(1)

NAME
       checkbashisms - check for bashisms in /bin/sh scripts

SYNOPSIS
       checkbashisms script ...
       checkbashisms --help|--version

DESCRIPTION
       checkbashisms, based on one of the checks from the lintian system, per-
       forms basic checks on /bin/sh shell scripts for the  possible  presence
       of  bashisms.   It  takes the names of the shell	scripts	on the command
       line, and outputs warnings if possible bashisms are detected.

       Note that the definition	of a bashism in	this context  roughly  equates
       to  "a  shell  feature  that is not required to be supported by POSIX";
       this means that some issues flagged may	be  permitted  under  optional
       sections	of POSIX, such as XSI or User Portability.

       In  cases  where	POSIX and Debian Policy	disagree, checkbashisms	by de-
       fault allows extensions permitted by Policy but may  also  provide  op-
       tions for stricter checking.

OPTIONS
       --help, -h
	      Show a summary of	options.

       --newline, -n
	      Check for	"echo -n" usage	(non POSIX but required	by Debian Pol-
	      icy 10.4.)

       --posix,	-p
	      Check for	issues which are non POSIX but	required  to  be  sup-
	      ported by	Debian Policy 10.4 (implies -n).

       --force,	-f
	      Force  each  script to be	checked, even if it would normally not
	      be (for instance,	it has a bash or non POSIX  shell  shebang  or
	      appears to be a shell wrapper).

       --extra,	-x
	      Highlight	 lines which, whilst they do not contain bashisms, may
	      be useful	in determining whether a particular issue is  a	 false
	      positive	which  may  be	ignored.   For	example,  the  use  of
	      "$BASH_ENV" may be preceded by checking whether "$BASH" is set.

       --version, -v
	      Show version and copyright information.

EXIT VALUES
       The exit	value will be 0	if no possible bashisms	or other problems were
       detected.  Otherwise it will be the sum of the following	error values:

       1      A	possible bashism was detected.

       2      A	 file was skipped for some reason, for example,	because	it was
	      unreadable or not	found.	The warning message will give details.

       4      No bashisms were detected	in a bash script.

SEE ALSO
       lintian(1)

AUTHOR
       checkbashisms was originally written as a shell script by  Yann	Dirson
       <dirson@debian.org>  and	 rewritten  in Perl with many more features by
       Julian Gilbey <jdg@debian.org>.

DEBIAN			       Debian Utilities		      CHECKBASHISMS(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXIT VALUES | SEE ALSO | AUTHOR

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