RGrep - Recursive Grep

Presentation

This script is an update of the command grep. It allows to search in the current directory and subdirectories ..
Here is the syntax:
rgrep <string> <filter>

Example:
rgrep jerome *

Will search for "jerome" string in the current directory and subdirectories.

The script

########################################################
## Script: rgrep (Recursive Grep)                       #
## Version: 1.00 - June 2008                            #
## Author: Jerome DESMOULINS (http://www.desmoulins.fr) #
#########################################################
## This script is a recursive grep. Usage is the same   #
## than grep Unix command.                              #
#########################################################
PN=`basename "$0"` # Program name
VER=`echo '$Revision: 1 $' | cut -d' ' -f2`

: ${GREP:=egrep}
FindOpts="-follow -type f"
GrepOpts=

#Command line usage
Usage () {
echo >&2 "$PN - recursive grep, $VER
usage: $PN [grep_opts | find_opts] SearchString [file | directory] ...
grep_opts: Options for $GREP (the default is \"$GrepOpts\")
find_opts: Options for find (the default is \"$FindOpts\")."
exit 1
}

#Show Message
Msg () {
for i
do echo "$PN: $i" >&2
done
}

#In case of fatal error
Fatal () { Msg "$@"; exit 1; }

Args=
while [ $# -gt 0 ]
do
case "$1" in
--) shift; break ;;
-h) Usage;;
-?) GrepOpts="${GrepOpts:+$GrepOpts }$1";;
-??*) Args="${Args:+$Args }$1";;
*) break ;; # First file name
esac
shift
done

[ -n "$Args" ] && FindOpts="$Args"

[ $# -lt 1 ] && Usage
Search="$1"; shift

[ $# -lt 1 ] && set -- . # Default search directory

exec find "$@" $FindOpts -print | xargs $GREP $GrepOpts "$Search" /dev/null