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Full Discussion: Troubles with shell script
Top Forums Shell Programming and Scripting Troubles with shell script Post 302510758 by Chubler_XL on Monday 4th of April 2011 10:35:41 PM
Old 04-04-2011
Thanks Alister, I originally had the echo statements as comments as the spec didn't seem to call for any error output.

However I think the above is much more usefull, self-documenting and educational for a beginner scripter than:

Code:
[ $# -lt 4 ] && exit 17
[ $# -gt 4 ] && exit 18
[ "$3" != "-0" ] && exit 16

 

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LEARN ABOUT SUSE

unify

UNIFY(1)							   User Commands							  UNIFY(1)

NAME

       unify - manual page for unify 0.5.93

SYNOPSIS

       unify [OPTION]... [FILE]

DESCRIPTION

       unify - Transforms context diffs into unidiffs, or vice-versa.

       -c, --context-diffs
	      force output to context diffs

       -e, --echo-comments
	      echo comments to standard error

       -o, --old-diffs
	      output old-style diffs, no matter what

       -p, --patch-format
	      generate patch format

       -P     same as -p

       -s, --strip-comments
	      strip comment lines

       -u, --unidiffs
	      force output to unidiffs

       -U     same as -p and -u

       -=, --use-equals
	      replace spaces by equal signs in unidiffs

       --help display this help and exit

       --version
	      output version information and exit

       If FILE is not specified, read standard input.

AUTHOR

       Written by Wayne Davison <davison@borland.com>.

REPORTING BUGS

       Report bugs to <wdiff-bugs@gnu.org>.

COPYRIGHT

       Copyright (C) 1994, 1997 Free Software Foundation, Inc.
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

SEE ALSO

       The full documentation for unify is maintained as a Texinfo manual.  If the info and unify programs are properly installed  at  your  site,
       the command

	      info unify

       should give you access to the complete manual.

unify 0.5.93							     June 2008								  UNIFY(1)
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