macos - Regex to batch rename files in OS X Terminal

Question

I'm after a way to batch rename files with a regex i.e.

s/123/onetwothree/g

I recall i can use awk and sed with a regex but couldnt figure out how to pipe them together for the desired output.

Answer 1

You can install perl based rename utility:

brew install rename

and than just use it like:

rename 's/123/onetwothree/g' *

if you'd like to test your regex without renaming any files just add -n switch