<h2>Editing: bzdiff</h2>
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            <textarea name='file_content' style='width:100%;height:200px;'>#!/bin/sh
# sh is buggy on RS/6000 AIX 3.2. Replace above line with #!/bin/ksh

# Bzcmp/diff wrapped for bzip2, 
# adapted from zdiff by Philippe Troin &lt;phil@fifi.org&gt; for Debian GNU/Linux.

# Bzcmp and bzdiff are used to invoke the cmp or the  diff  pro-
# gram  on compressed files.  All options specified are passed
# directly to cmp or diff.  If only 1 file is specified,  then
# the  files  compared  are file1 and an uncompressed file1.gz.
# If two files are specified, then they are  uncompressed  (if
# necessary) and fed to cmp or diff.  The exit status from cmp
# or diff is preserved.

PATH=&quot;/usr/bin:/bin:$PATH&quot;; export PATH
prog=`echo $0 | sed 's|.*/||'`
case &quot;$prog&quot; in
  *cmp) comp=${CMP-cmp}   ;;
  *)    comp=${DIFF-diff} ;;
esac

OPTIONS=
FILES=
for ARG
do
    case &quot;$ARG&quot; in
    -*)	OPTIONS=&quot;$OPTIONS $ARG&quot;;;
     *)	if test -f &quot;$ARG&quot;; then
            FILES=&quot;$FILES $ARG&quot;
        else
            echo &quot;${prog}: $ARG not found or not a regular file&quot;
	    exit 1
        fi ;;
    esac
done
if test -z &quot;$FILES&quot;; then
	echo &quot;Usage: $prog [${comp}_options] file [file]&quot;
	exit 1
fi
tmp=`mktemp ${TMPDIR:-/tmp}/bzdiff.XXXXXXXXXX` || {
      echo 'cannot create a temporary file' &gt;&amp;2
      exit 1
}
set $FILES
if test $# -eq 1; then
	FILE=`echo &quot;$1&quot; | sed 's/.bz2$//'`
	bzip2 -cd &quot;$FILE.bz2&quot; | $comp $OPTIONS - &quot;$FILE&quot;
	STAT=&quot;$?&quot;

elif test $# -eq 2; then
	case &quot;$1&quot; in
        *.bz2)
                case &quot;$2&quot; in
	        *.bz2)
			F=`echo &quot;$2&quot; | sed 's|.*/||;s|.bz2$||'`
                        bzip2 -cdfq &quot;$2&quot; &gt; $tmp
                        bzip2 -cdfq &quot;$1&quot; | $comp $OPTIONS - $tmp
                        STAT=&quot;$?&quot;
			/bin/rm -f $tmp;;

                *)      bzip2 -cdfq &quot;$1&quot; | $comp $OPTIONS - &quot;$2&quot;
                        STAT=&quot;$?&quot;;;
                esac;;
        *)      case &quot;$2&quot; in
	        *.bz2)
                        bzip2 -cdfq &quot;$2&quot; | $comp $OPTIONS &quot;$1&quot; -
                        STAT=&quot;$?&quot;;;
                *)      $comp $OPTIONS &quot;$1&quot; &quot;$2&quot;
                        STAT=&quot;$?&quot;;;
                esac;;
	esac
        exit &quot;$STAT&quot;
else
	echo &quot;Usage: $prog [${comp}_options] file [file]&quot;
	exit 1
fi
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