Perhaps wait
or other commands should be described here also?
sleep
: Delay for a specified time
sleep
pauses for an amount of time specified by the sum of
the values of the command line arguments.
Synopsis:
sleep [ number[smhd] ]...
Each argument is a number followed by an optional unit; the default is seconds. The units are:
The only options are `--help' and `--version'. See section Common options.