:#!/bin/sh# sh is buggy on RS/6000 AIX 3.2. Replace above line with #!/bin/ksh# Zcmp and zdiff 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="BINDIR:$PATH"; export PATHprog=`echo $0 | sed 's|.*/||'`case "$prog" in  *cmp) comp=${CMP-cmp}   ;;  *)    comp=${DIFF-diff} ;;esacOPTIONS=FILES=for ARGdo    case "$ARG" in    -*)	OPTIONS="$OPTIONS $ARG";;     *)	if test -f "$ARG"; then            FILES="$FILES $ARG"        else            echo "${prog}: $ARG not found or not a regular file"	    exit 1        fi ;;    esacdoneif test -z "$FILES"; then	echo "Usage: $prog [${comp}_options] file [file]"	exit 1fiset $FILESif test $# -eq 1; then	FILE=`echo "$1" | sed 's/[-.][zZtga]*$//'`	gzip -cd "$1" | $comp $OPTIONS - "$FILE"	STAT="$?"elif test $# -eq 2; then	case "$1" in        *[-.]gz* | *[-.][zZ] | *.t[ga]z)                case "$2" in	        *[-.]gz* | *[-.][zZ] | *.t[ga]z)			F=`echo "$2" | sed 's|.*/||;s|[-.][zZtga]*||'`                        gzip -cdfq "$2" > /tmp/"$F".$$                        gzip -cdfq "$1" | $comp $OPTIONS - /tmp/"$F".$$                        STAT="$?"			/bin/rm -f /tmp/"$F".$$;;                *)      gzip -cdfq "$1" | $comp $OPTIONS - "$2"                        STAT="$?";;                esac;;        *)      case "$2" in	        *[-.]gz* | *[-.][zZ] | *.t[ga]z)                        gzip -cdfq "$2" | $comp $OPTIONS "$1" -                        STAT="$?";;                *)      $comp $OPTIONS "$1" "$2"                        STAT="$?";;                esac;;	esac        exit "$STAT"else	echo "Usage: $prog [${comp}_options] file [file]"	exit 1fi