sleep

Delay for a specified amount of time. More information: https://www.gnu.org/software/coreutils/manual/html_node/sleep-invocation.html.

• Delay in seconds:

sleep seconds

• Delay in [m]inutes. (Other units [d]ay, [h]our, [s]econd, [inf]inity can also be used):

sleep minutesm

• Delay for 1 [d]ay 3 [h]ours:

sleep 1d 3h

• Execute a specific command after 20 [m]inutes delay:

sleep 20m && command