rpl is a UN*X text replacement utility. It will replace strings with new strings in multiple text files. It can work recursively over directories and supports limiting the search to specific file suffixes.
Full Specifications
What's new in version 1.4
General
ReleaseAugust 25, 2008
Date AddedJuly 24, 2002
Version1.4
Operating Systems
Operating SystemsMacintosh, Mac OS X 10.0, Mac OS X 10.1