I noticed that we don't have a tag for challenges which are about dealing with the file system (checking for files, creating directories, moving files, etc.).
I believe we should create one, but I thought there was no obvious choice for a name. So I thought, let's do a good ol' meta poll. I'll add a few suggestions. Please vote according to your preferences and add your own suggestions.
Once there is a clear consensus I will accept the relevant answer and slowly start retagging old challenges.