How can I replace the same text in folder names in linux?

Say I have "Photos\_Jun", "Photos\_July", "Photos\_Aug", etc. whats the simplest way I can rename them like "Photos Jun", "Photos July", etc (basically I want to replace the underscore with a space " ". I have about 200 of these folders.

I was looking at solution: [How can I easily bulk rename files with Perl?](https://stackoverflow.com/questions/1836563/how-can-i-easily-bulk-rename-files-with-perl)

It looks like what im looking for however, I dont know how to make a regular expression to match folders that are alphanumeric followed by a "\_".

All files have non-numeric names, so I think [a-zA-Z] is the right way to start.

```
perl -e 'foreach $f (glob("File\\ Name*")) { $nf = $f; $nf =~ s/(\d+)$/sprintf("%03d",$1)/e; print `mv \"$f\" \"$nf\"`;}'

```

Thanks for any help!