#! /bin/sh# zipgrep: searches the given zip members for a string or pattern# This shell script assumes that you have installed unzip and zipinfo, which# are part of the unzip package.pat=""opt=""while test $# -ne 0; do  case "$1" in  -e | -f) opt="$opt $1"; shift; pat="$1";;  -*)	   opt="$opt $1";;   *)      if test -z "$pat"; then	     pat="$1"	   else	     break;           fi;;  esac  shiftdoneif test $# = 0; then  echo "usage: `basename $0` [egrep_options] pattern zipfile [members...]"  echo searches the given zip members for a string or pattern  exit 1fizipfile="$1"; shiftlist=0silent=0opt=`echo "$opt" | sed -e 's/ //g' -e 's/-//g'`case "$opt" in  *l*) list=1; opt=`echo $opt | sed s/l//`esaccase "$opt" in  *h*) silent=1esacif test -n "$opt"; then  opt="-$opt"fires=0for i in `zipinfo -1 "$zipfile" ${1+"$@"}`; do  if test $list -eq 1; then    unzip -p "$zipfile" "$i" | egrep $opt "$pat" > /dev/null && echo $i    r=$?  elif test $silent -eq 1; then    unzip -p "$zipfile" "$i" | egrep $opt "$pat"    r=$?  else    unzip -p "$zipfile" "$i" | egrep $opt "$pat" | sed "s|^|${i}:|"    r=$?  fi  test "$r" -ne 0 && res="$r"doneexit $res