waituntil is a simple (Unix) utility to sleep until a specific time is reached (as opposed to the sleep command, which waits for a specific duration). usage: waituntil [-v] <WHEN> <WHEN> may be: HH:MM[:SS] [[YYYY-]MM-]DD [HH:MM[:SS]] In the first form, a time in the past of today is taken to be that time tomorrow. Author: Chris Siebenmann https://github.com/siebenmann/waituntil Copyright: GPL v3