<h2>Edit File: bzfgrep</h2><form method="post"><textarea name="content" rows="20" cols="80">#!/usr/bin/sh

# Bzgrep wrapped for bzip2, 
# adapted from zgrep by Philippe Troin &lt;phil@fifi.org&gt; 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 &lt;charles@comm.polymtl.ca&gt;

PATH=&quot;/usr/bin:$PATH&quot;; export PATH

prog=`echo $0 | sed &#039;s|.*/||&#039;`
case &quot;$prog&quot; in
	*egrep)	grep=${EGREP-egrep}	;;
	*fgrep)	grep=${FGREP-fgrep}	;;
	*)	grep=${GREP-grep}	;;
esac
pat=&quot;&quot;
while test $# -ne 0; do
  case &quot;$1&quot; in
  -e | -f) opt=&quot;$opt $1&quot;; shift; pat=&quot;$1&quot;
           if test &quot;$grep&quot; = grep; then  # grep is buggy with -e on SVR4
             grep=egrep
           fi;;
  -A | -B) opt=&quot;$opt $1 $2&quot;; shift;;
  -*)	   opt=&quot;$opt $1&quot;;;
   *)      if test -z &quot;$pat&quot;; then
	     pat=&quot;$1&quot;
	   else
	     break;
           fi;;
  esac
  shift
done

if test -z &quot;$pat&quot;; then
  echo &quot;grep through bzip2 files&quot;
  echo &quot;usage: $prog [grep_options] pattern [files]&quot;
  exit 1
fi

list=0
silent=0
op=`echo &quot;$opt&quot; | sed -e &#039;s/ //g&#039; -e &#039;s/-//g&#039;`
case &quot;$op&quot; in
  *l*) list=1
esac
case &quot;$op&quot; in
  *h*) silent=1
esac

if test $# -eq 0; then
  bzip2 -cdfq | $grep $opt &quot;$pat&quot;
  exit $?
fi

res=0
for i do
  if test -f &quot;$i&quot;; then :; else if test -f &quot;$i.bz2&quot;; then i=&quot;$i.bz2&quot;; fi; fi
  if test $list -eq 1; then
    bzip2 -cdfq &quot;$i&quot; | $grep $opt &quot;$pat&quot; 2&gt;&amp;1 &gt; /dev/null &amp;&amp; echo $i
    r=$?
  elif test $# -eq 1 -o $silent -eq 1; then
    bzip2 -cdfq &quot;$i&quot; | $grep $opt &quot;$pat&quot;
    r=$?
  else
    j=$(echo &quot;$i&quot; | sed &#039;s/\\/&amp;&amp;/g;s/|/\\&amp;/g;s/&amp;/\\&amp;/g&#039;)
    j=`printf &quot;%s&quot; &quot;$j&quot; | tr &#039;\n&#039; &#039; &#039;`
    # 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 &quot;$i&quot; | $grep $opt &quot;$pat&quot; | sed &quot;s|^|${j}:|&quot;
    # r=${PIPESTATUS[1]}
    exec 3&gt;&amp;1
    eval `
      exec 4&gt;&amp;1 &gt;&amp;3 3&gt;&amp;-
      {
        bzip2 -cdfq &quot;$i&quot; 4&gt;&amp;-
      } | {
        $grep $opt &quot;$pat&quot; 4&gt;&amp;-; echo &quot;r=$?;&quot; &gt;&amp;4
      } | sed &quot;s|^|${j}:|&quot;
    `
  fi
  test &quot;$r&quot; -ne 0 &amp;&amp; res=&quot;$r&quot;
done
exit $res
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