The problem is the file you accidentally delete (or whatever) is probably not the one with the weird name. Most bogus filenames I've seen were created by shell

The problem is the file you accidentally delete (or whatever) is probably not the one with the weird name. Most bogus filenames I've seen were created by shell scripts that had a set of commands that was accidentally quoted instead of executed, so they tend to contain the names of files which were important to the author.