#!/bin/sh # zgrep -- a wrapper around a grep program that decompresses files as needed # Adapted from a version sent by Charles Levert PATH="/usr/bin:$PATH"; export PATH prog=`echo $0 | sed 's|.*/||'` case "$prog" in *egrep) grep=${EGREP-egrep} ;; *fgrep) grep=${FGREP-fgrep} ;; *) grep=${GREP-grep} ;; esac pat="" 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="$1" else break; fi;; esac shift done if test -z "$pat"; then echo "grep through gzip files" echo "usage: $prog [grep_options] pattern [files]" exit 1 fi list=0 silent=0 op=`echo "$opt" | sed -e 's/ //g' -e 's/-//g'` case "$op" in *l*) list=1 esac case "$op" in *h*) silent=1 esac if test $# -eq 0; then gzip -cdfq | $grep $opt "$pat" exit $? fi res=0 for 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" done exit $res