.\" Copyright (c) 1990, 1993, 1994 .\" The Regents of the University of California. All rights reserved. .\" .\" This code is derived from software contributed to Berkeley by .\" the Institute of Electrical and Electronics Engineers, Inc. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. All advertising materials mentioning features or use of this software .\" must display the following acknowledgement: .\" This product includes software developed by the University of .\" California, Berkeley and its contributors. .\" 4. Neither the name of the University nor the names of its contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" @(#)sleep.1 8.3 (Berkeley) 4/18/94 .\" $Id: sleep.1,v 1.3 1998/01/27 16:02:15 gdr-ftp Exp $ .\" .TH SLEEP 1 "September 1997" GNO "Commands and Applications" .SH NAME .BR sleep \- suspend execution for an interval of time .SH SYNOPSIS .BR sleep .BR seconds .SH DESCRIPTION The .BR sleep command suspends execution for a minimum of .BR seconds . .BR sleep is used to schedule the execution of other commands (see .B EXAMPLES below). .LP If the .BR sleep command receives a SIGALRM signal, it terminates normally with a zero exit status, for any other signal it takes the standard action. .LP The .BR sleep utility exits with one of the following values: .IP \fB0\fR On successful completion, or if the signal .BR SIGALRM was received. .IP \fB\&>\&0\fR An error occurred. .SH EXAMPLES To schedule the execution of a command for some number of seconds later: .LP .B "sleep 1800; command_file" .LP This incantation would wait a half hour before running the script command_file. (See the .BR at (1) utility.) .SH VERSION This manual page documents .BR sleep version 2.0. .SH ATTRIBUTIONS This command was ported from FreeBSD source code for distribution with GNO/ME 2.0.6. .SH SEE ALSO .BR at (1), .BR setitimer (2), .BR alarm (3), .BR sleep (3) .SH STANDARDS The .BR sleep command is expected to be POSIX.2 compatible.