sleep.1

<B>Digital的Unix操作系统VAX 4.2源码</B>

.\" SCCSID: @(#)sleep.1	8.1	9/11/90
.\" SCCSID: @(#)sleep.1	8.1	9/11/90
.TH sleep 1 
.SH Name
sleep \- suspend execution for a time
.SH Syntax
.B sleep
\fItime\fR
.SH Description
.NXR "sleep command"
.NXR "process" "suspending"
The
.PN sleep
command suspends execution for
.I time
seconds.
It is used to execute a command after a certain amount of time as in:
.EX
	(sleep 105; command)&
.EE
or to execute a command every so often, as in:
.EX
	while true

	do

		command

		sleep 37

	done
.EE
.SH Restrictions
The
.I time
must be less than 2,147,483,647 seconds.
.SH See Also
setitimer(2), alarm(3), sleep(3)