I am trying to determine a perl method to add an extension to a list of files. I can already rename a list of files with a certain extension to some other extension, but I need to be able to do this for any file name, whether or not it already has an extension.
For example, I have a list of files such as:
file1 file2 file3 ps.dir
And I want to rename them ALL to
file1.bad file2.bad file3.bad ps.dir.bad