rename multiple files given a pattern

This might come in handy when renaming a controller or model (in rails).

If you are doing things right (and you should) you should have lots of files for tests and views that follow the same name convention, then renaming all those files manually can be cumbersome.

find . -name 'REGEX-PATTERN' -exec bash -c 'mv $0 ${0/REGEX-PATTERN/NEW-STRING}' {} \;

for example:

find . -name '*user*.rb' -exec bash -c 'mv $0 ${0/user/admin}' {} \;

will change all the file names, changing user for admin. where the file ends in .rb