Add digit to batch rename files

[charlest39854328]

Have couple thousand jpg files that I need go from 4 digits (ex. IMG_1158.jpg) to 5 digits (IMG_01158.jpg). Basically, I want to keep the current name and add a zero (a digit) at the beginning. Also, there are gaps in the numbering, they are not continuous: Sequence Number will not work  Current Filename or Preserved Filename keep the existing name but don't offer the option of inserting anything into the file name. 

[c.pfaffenbichler · Accepted solution]

Are you talking about Bridge or a Photoshop Script?

[Benjamin Root]

I’m thinking you can probably work something out in Command Prompt (if you run Windows). cmd - Batch renaming files using Windows 7 REN (adding prefix)? - Stack Overflow

You may have to remove the original prefix then add it back on.

[Jerry_Hoffmann]

there are plenty of file re-namers that are freeware.

such as "Renamer" which i use all of the time.

https://www.den4b.com/products/renamer

[charlest39854328]

Sorry, I am using CS5 Bridge's Batch Rename feature with a macbook pro 10.12.2