:#!/bin/sh# zgrep -- a wrapper around a grep program that decompresses files as needed# Adapted from a version sent by Charles Levert <charles@comm.polymtl.ca>PATH="BINDIR:$PATH"; export PATHprog=`echo $0 | sed 's|.*/||'`case "$prog" in	*egrep)	grep=${EGREP-egrep}	;;	*fgrep)	grep=${FGREP-fgrep}	;;	*)	grep=${GREP-grep}	;;esacpat=""while test $# -ne 0; do  case "$1" in  -e | -f) opt="$opt $1"; shift; pat="$1"           if test "$grep" = grep; then  # grep is buggy with -e on SVR4             grep=egrep           fi;;  -*)	   opt="$opt $1";;   *)      if test -z "$pat"; then	     pat="$1"	   else	     break;           fi;;  esac  shiftdoneif test -z "$pat"; then  echo "grep through gzip files"  echo "usage: $prog [grep_options] pattern [files]"  exit 1filist=0silent=0op=`echo "$opt" | sed -e 's/ //g' -e 's/-//g'`case "$op" in  *l*) list=1esaccase "$op" in  *h*) silent=1esacif test $# -eq 0; then  gzip -cdfq | $grep $opt "$pat"  exit $?fires=0for i do  if test $list -eq 1; then    gzip -cdfq "$i" | $grep $opt "$pat" > /dev/null && echo $i    r=$?  elif test $# -eq 1 -o $silent -eq 1; then    gzip -cdfq "$i" | $grep $opt "$pat"    r=$?  else    gzip -cdfq "$i" | $grep $opt "$pat" | sed "s|^|${i}:|"    r=$?  fi  test "$r" -ne 0 && res="$r"doneexit $res