NameChanger is a quick and easy way to bulk rename files on OSX. But it took a bit of trial and error for me to figure out how to use back references when I wanted to use a regular expression. This brand of regex syntax uses $.
Quick howto:
- select and drag some files into the left pane
- eg file:
301 - some.show.name.avi->Some.Show.s3e01.avi - left box:
^(\d)(\d\d).*, middle box: regular expression, right box:Some.Show.s$1e$2.avi - click the rename button