hpux man page for sleep

sleep(1)						      General Commands Manual							  sleep(1)

NAME
       sleep - suspend execution for an interval

SYNOPSIS
       time

DESCRIPTION
       suspends execution for time seconds.  It is used to execute a command after a certain amount of time, as in:

       or to execute a command periodically, as in:

		  command

RETURN VALUE
       exits with one of the following values:

	      0    The execution was successfully suspended for time seconds, or a SIGALRM signal was received.

	      >0   If the time operand is missing, is not a decimal integer, is negative, or is greater than returns with exit status 2.

SEE ALSO
       alarm(2), sleep(3C).

STANDARDS CONFORMANCE
																	  sleep(1)