#!/bin/ksh
if [ -z "$1" -o -n "$3" ]
then
    echo "hotshell: illegal option or usage"
    echo "Usage: hrgrep (pattern) [directory]"
    echo "If no directory given, searches current directory"
    exit 1
elif [ -n "$1" -a -z "$2" ]
then
    find . -exec grep $1 {} \;
    exit 0
elif [ -n "$1" -a ! -d "$2" ]
then
    echo $2" is not a valid directory"
    exit 1
elif [ -n "$1" -a -d "$2" ]
then
    find $2 -exec grep $1 {} \;
    exit 0
fi