#!/bin/sh

# RegExRename.sh
# Wed Feb 27 21:22:20 GMT 2008
# Chieh Cheng

# GNU General Public License (GPL) Version 2, June 1991

scriptName=`echo $0 | sed s/\\\\/.*\\\\///g`

usage ()
{
  echo "  Usage:   $scriptName \"srch str\" \"repl str\" \"file 1\" [ ... \"file n\" ]"
}

if [ $# -gt 2 ]
then
  search="$1"
  replace="$2"

  shift
  shift

  for file
  do
    if [ -f "${file}" ]
    then
      destination=`echo "${file}" | sed "s/${search}/${replace}/g"`
      if [ -f "${destination}" ]
      then
        echo "${destination} already exists!"
      else
        printf "${file} -> "
        mv "${file}" "${destination}"
        echo "${destination}"
      fi
    else
      echo "${file} does not exist!"
    fi
  done
else
  usage
fi