coreutils: unlink invocation

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1 12.8 ‘unlink’: Remove files via the unlink syscall
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1 ‘unlink’ deletes a single specified file name.  It is a minimalist
11 interface to the system-provided ‘unlink’ function.  ⇒
 (libc)Deleting Files.  Synopsis: It avoids the bells and whistles of
1 the more commonly-used ‘rm’ command (⇒rm invocation).
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1      unlink FILENAME
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1    On some systems ‘unlink’ can be used to delete the name of a
1 directory.  On others, it can be used that way only by a privileged
1 user.  In the GNU system ‘unlink’ can never delete the name of a
1 directory.
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1    The ‘unlink’ command honors the ‘--help’ and ‘--version’ options.  To
1 remove a file whose name begins with ‘-’, prefix the name with ‘./’,
1 e.g., ‘unlink ./--help’.
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1    An exit status of zero indicates success, and a nonzero value
1 indicates failure.
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