In OS X you can set up a routine to batch-rename files using Apple's Automator program, where you can make a service plug-in that will offer you options to change names to collecitons of files.

One of OS X 10.10 Yosemite’s most useful new features — batch renaming in the Finder — has gone largely overlooked in the weeks since its release. In the past, you had to use a third-party utility, ...