http://www.perlmonks.org?node_id=811227


in reply to Re^2: RFC: A new module to help avoid running multiple instances of the same script (via cron, for example)
in thread RFC: A new module to help avoid running multiple instances of the same script (via cron, for example)

That code was written pretty early. The suggestion you're making is one I started preaching a bit later.

-- Randal L. Schwartz, Perl hacker

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.