An alternative to sleep written in Rust that allows specifying a timestamp and exit code.
yawn [OPTIONS] <DURATION or TIMESTAMP>
OPTIONS:
-e, --exit-code NUM
Exit code, defaults to 0.
DURATION or TIMESTAMP:
Durations are of the format:
any positive integer or float are interpreted as seconds (eg 123, 123.45)
a single string with 'd', 'h', 'm', 's', 'ms' as units, corresponding to days,
hours, minutes, seconds, and milliseconds. (eg 1d2h3m4s5ms, 1d15m)
Exact timestamps are of the format:
RFC3339 (eg 1996-12-19T16:39:57-08:00)
RFC2822 (eg Tue, 1 Jul 2003 10:52:37 +0200)
YYYY-mm-dd HH:MM:SS [local time] (eg 2005-01-03 12:23:34)
YYYY-mm-dd HH:MM (eg. 2005-01-03 12:23)
Inexact-timestamps are of the format:
HH:MM [24-hour format] (eg 14:23)
HH:MM:SS [24-hour format] (eg 14:23:45)
HH:MM:SS.nnn [24-hour format] (eg 14:23:45.678)
h:MM P [12-hour format] (eg 8:12 am)
Inexact timestamps always refer to next upcoming date.
EXAMPLES:
yawn 1d2h3m4s
Sleep for 1 day, 2 hours, 3 minutes, and 4 seconds.
yawn '8:00 am'
Sleep until the upcoming 8 am.
yawn '2022-04-01T00:00:00Z'
Sleep until midnight of April 1st, 2022 UTC.