JezK
Edit File: bzgrep
#!/usr/bin/sh # Bzgrep wrapped for bzip2, # adapted from zgrep by Philippe Troin <phil@fifi.org> for Debian GNU/Linux. ## zgrep notice: ## 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="/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;; -A | -B) opt="$opt $1 $2"; shift;; -*) opt="$opt $1";; *) if test -z "$pat"; then pat="$1" else break; fi;; esac shift done if test -z "$pat"; then echo "grep through bzip2 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 bzip2 -cdfq | $grep $opt "$pat" exit $? fi res=0 for i do if test -f "$i"; then :; else if test -f "$i.bz2"; then i="$i.bz2"; fi; fi if test $list -eq 1; then bzip2 -cdfq "$i" | $grep $opt "$pat" 2>&1 > /dev/null && echo $i r=$? elif test $# -eq 1 -o $silent -eq 1; then bzip2 -cdfq "$i" | $grep $opt "$pat" r=$? else j=$(echo "$i" | sed 's/\\/&&/g;s/|/\\&/g;s/&/\\&/g') j=`printf "%s" "$j" | tr '\n' ' '` # A trick adapted from # https://groups.google.com/forum/#!original/comp.unix.shell/x1345iu10eg/Nn1n-1r1uU0J # that has the same effect as the following bash code: # bzip2 -cdfq "$i" | $grep $opt "$pat" | sed "s|^|${j}:|" # r=${PIPESTATUS[1]} exec 3>&1 eval ` exec 4>&1 >&3 3>&- { bzip2 -cdfq "$i" 4>&- } | { $grep $opt "$pat" 4>&-; echo "r=$?;" >&4 } | sed "s|^|${j}:|" ` fi test "$r" -ne 0 && res="$r" done exit $res