#!/bin/sh
#
# findlines - find lines from one file in another file
# Michael Ward <michael@endbracket.net>
#
# $Id$

. "$HOME/bin/functions"

invert=
while getopts "v" flag
do
    case $flag in
    v)
        # print lines NOT in the compare file
        invert=1
        ;;
    esac
done
shift $((OPTIND - 1))

if test $# -ne 2
then
    error "Usage: findlines [-v] <source file> <compare file>"
    exit 2
fi

src="$1"
cmp="$2"

while read line
do
    if test -n "$invert"
    then
        fgrep -q -x $flags "$line" "$cmp" || echo "$line"
    else
        fgrep -x $flags "$line" "$cmp"
    fi
done < "$src"