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Deletes a list of files. Returns the number of files successfully deleted.

$cnt = unlink 'a', 'b', 'c';
unlink @goners;
unlink <*.bak>;

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, uses $_.