SLEEP(1) General Commands Manual SLEEP(1)
sleep - suspend execution for a specified interval
sleep suspends execution for time seconds. It is used to execute a
command after a certain amount of time as in:
(sleep 105; command)&&
or to execute a command every so often, as in:
time must be less than 2,147,483,647 seconds.
9 September 1987 SLEEP(1)