AKA: mass_rename -or- MRTFU
This module provides a method of mass renaming items in an album. It provides options for the title, filename, and URL renaming. Once installed, you'll have an option in the album 'options' menu called 'MRTFU album' Once you 'mrtfu' an album, a task will be created that, once run (from admin->maintenance), will perform the renames It generates a task to ensure that ALL items in the album can be renamed without timing out in the event of a LOT of child photos
This module may be downloaded from the codex here.
To install, extract the "MRTFU" folder from the zip file into your Gallery 3 modules folder.
Afterwards log into your Gallery web site as an administrator and activate the module in the Admin -> Modules menu.
The 'MRTFU album' menu option will only show in the options menu when an album has photos in it. If the album only contains albums, the link will not show