Go Systems Programming

Renaming multiple files using regular expressions

The last section on pattern matching and regular expressions will work on filenames and will allow you to rename multiple files. As you can guess, a walk function will be used in the program while a regular expression will match the filenames you want to rename.

When dealing with files, you should be extra careful because you might accidentally destroy things! Putting it simply, do not test such utilities on a production server.

The name of the utility will be multipleMV.go, and it will be presented in three parts. What multipleMV.go will do is insert a string in front of every filename that is a match to the given regular expression.

The first part is the expected preamble:

package main import ...