bash script to exchange a literal in files and file names (can be used to completely rename a Xcode project or to refactor something throughout your whole project, use with caution!)

refactor.sh

#!/usr/bin/env bash

# Refactor file and directory names as well as words in files
#
# @param 1 - case-sensitive pattern to replace
# @param 2 - replacement string
# @param 3 - working directory (optional)
refactor()
{
	local PATTERN=$1
	local REPLACEMENT=$2
	local DIR=${3:-.}

	(( $# < 2 )) && {
		echo "usage: ${0##*/} PATTERN REPLACEMENT [DIR]"
		return 1
	}

	# rename directories before files
	local TYPE REFACTORED
	for TYPE in d f
	do
		find "$DIR" -type "$TYPE" -name "*$PATTERN*" | while read -r
		do
			REFACTORED=${REPLY//$PATTERN/$REPLACEMENT}
			echo "renaming $REPLY to $REFACTORED"
			mv "$REPLY" "$REFACTORED"
		done
	done

	local TMP=".tmp-${0##*/}-$$"
	grep -rl "$PATTERN" "$DIR"/* | while read -r
	do
		echo "replacing pattern in $REPLY"
		sed -e "s/$PATTERN/$REPLACEMENT/g" < "$REPLY" > "$TMP" &&
			cat "$TMP" > "$REPLY"

		rm -f "$TMP"
	done
}

if [ "${BASH_SOURCE[0]}" == "$0" ]
then
	refactor "$@"
fi