unlink

unlink
Deletes a list of files. On success, it returns the number of files it successfully deleted. On failure, it returns false and sets $! (errno):
```
    my $unlinked = unlink 'a', 'b', 'c';
    unlink @goners;
    unlink glob "*.bak";
```
On error, unlink will not tell you which files it could not remove. If you want to know which files you could not remove, try them one at a time:
```
     foreach my $file ( @goners ) {
         unlink $file or warn "Could not unlink $file: $!";
     }
```
Note: unlink will not attempt to delete directories unless you are superuser and the -U flag is supplied to Perl. Even if these conditions are met, be warned that unlinking a directory can inflict damage on your filesystem. Finally, using unlink on directories is not supported on many operating systems. Use rmdir instead.

If LIST is omitted, unlink uses $_ .