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Date: Wed, 29 May 2013 16:17:58 -0400 (EDT)
From: Stuart Barkley <stuartb@4gh.net>
To: freebsd-questions@freebsd.org
Subject: Re: BSD sleep
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On Tue, 28 May 2013 at 19:01 -0000, Kenta Suzumoto wrote:

> Hi. Is there no built-in way of making "sleep" sleep in increments
> of minutes, hours, etc? The GNU "sleep" can be invoked like "sleep
> 1h" for an hour. The FreeBSD one's manpage leads me to believe we
> can only use seconds, which is kind of annoying. Is there an
> undocmented or missing feature here? Seems really trivial to
> implement.
>
> ~ $ sleep 1h
> usage: sleep seconds

See also /usr/ports/misc/delay.

Stuart