ultrix man page for sleep

sleep(1)						      General Commands Manual							  sleep(1)

Name
       sleep - suspend execution for a time

Syntax
       sleep time

Description
       The command 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:
	    while true

	    do

		 command

		 sleep 37

	    done

Restrictions
       The time must be less than 2,147,483,647 seconds.

See Also
       setitimer(2), alarm(3), sleep(3)

																	  sleep(1)