Deletes a list of files. Returns the number of files successfully deleted.
$cnt = unlink 'a', 'b', 'c';unlink @goners;unlink <*.bak>;Note:unlink will not delete directories unless you are superuser and the-U flag is supplied to Perl. Even if these conditions are met, be warned that unlinking a directory can inflict damage on your filesystem. Usermdir instead.
If LIST is omitted, uses$_.
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