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 Alsosetitimer(2), alarm(3), sleep(3)sleep(1)
Check Out this Related Man Page
sleep(3UCB) SunOS/BSD Compatibility Library Functions sleep(3UCB)NAME
sleep - suspend execution for interval
SYNOPSIS
/usr/ucb/cc [ flag ... ] file ...
int sleep(seconds)
unsigned seconds;
DESCRIPTION
sleep() suspends the current process from execution for the number of seconds specified by the argument. The actual suspension time may be
up to 1 second less than that requested, because scheduled wakeups occur at fixed 1-second intervals, and may be an arbitrary amount longer
because of other activity in the system.
sleep() is implemented by setting an interval timer and pausing until it expires. The previous state of this timer is saved and restored.
If the sleep time exceeds the time to the expiration of the previous value of the timer, the process sleeps only until the timer would have
expired, and the signal which occurs with the expiration of the timer is sent one second later.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|MT-Level |Async-Signal-Safe |
+-----------------------------+-----------------------------+
SEE ALSO cc(1B), alarm(2), getitimer(2), longjmp(3C), siglongjmp(3C), sleep(3C), usleep(3C), attributes(5)NOTES
Use of these interfaces should be restricted to only applications written on BSD platforms. Use of these interfaces with any of the system
libraries or in multi-thread applications is unsupported.
SIGALRM should not be blocked or ignored during a call to sleep(). Only a prior call to alarm(2) should generate SIGALRM for the calling
process during a call to sleep(). A signal-catching function should not interrupt a call to sleep() to call siglongjmp(3C) or longjmp(3C)
to restore an environment saved prior to the sleep() call.
WARNINGS
sleep() is slightly incompatible with alarm(2). Programs that do not execute for at least one second of clock time between successive calls
to sleep() indefinitely delay the alarm signal. Use sleep(3C). Each sleep(3C) call postpones the alarm signal that would have been sent
during the requested sleep period to occur one second later.
SunOS 5.11 30 Oct 2007 sleep(3UCB)
Ok..i've installed Apache 1.3.14, and it runs... BUT...I can't figure out how to get the php-4.0.4 module to run, and i've read through the install file and EVERYTYHING, aafter about 10 attempts I pissed myself off enough to goto sleep...Can anyone suggest a place to look for a lil bit more help?... (10 Replies)
I'm need to connect to another host in a script using the telnet command. How do I pass the login and password to be able to connect to the other host from within the script? (10 Replies)
Hi All,
Need some help here. Can anyone tell me how to set or which start up script to edit in order not to set the server to sleep mode after a while of inactivity. My Unix server will go to sleep mode and then i always end up with a OK Prompt and have to reset the server. My Server is a V120... (16 Replies)
Hi,
Could someone please tell me how to wakeup sleeping processes? (i.e. change the process status from "S" to "R" when viewing in ps command).
I ran a few programs in the background by "&" which went into "sleep" mode and I want them to run.
Any help will be greatly appreciated.
Steve (11 Replies)
I am doing some programming using C on UNIX. The thing is, I have been working in both UNIX and Windows for practicing.
I created a Delay fucntion over Windows using DevC++ as a compiler, when I tried over the console, it worked as I expected, I mean it was creating a delay (of one second for... (10 Replies)
I am new to Shell Scripting and I need help to write the following script in a different format...
This is the current script:
#!/usr/bin/ksh
environment=rms
export environment
. $AW_HOME/RETEK/exec/RETEK_ENVAR
ls -ltr $MMPOS/RTLOG* | tr -s " " | cut -d " " -f9... (20 Replies)
Be Truthful :D
Do you sleep with any battery powered devices?
Select multiple choices if you do !!
Suggest new devices to add to the poll !! (13 Replies)
Hi All,
I am working on a script which requires an input from user within one 1 min.
So if the user gives the required input within 1 min., it will execute on the basis of input provided by the user.Other wise it will execute on a default value(hard coded inside the script).
Now, I am... (19 Replies)
Hi Forum.
I have a script that accepts 3 input parameters (source directory, list file text, sleep time) and checks for the presence of files. If not there, script goes to sleep for certain amount of time provided by 3rd input.
list file text contains 1 entry but may contain more (file... (13 Replies)
Hi guys,
I am creating two posix threads. I have some queries, hopefully you will help me out with them
1) How can I put a thread to indefinite sleep, for indefinite time period. I am familiar with this
sleep(5);
for 5 second, how can I make it indefinite??
2) How can one thread wake another... (11 Replies)
I am having issues with trap not working inside a script. I am currently trying this on a Knoppix system V 5.1. What I would like to happen is when I press control c, a message gets echoed and the script is ended. For example:
#! /bin/bash
trap "echo CTRL c was pressed ; break" SIGINT... (11 Replies)
Greetings.
I've been wondering about this one for some time: Is there an alternative to sleep in bash?
The reason: I'd like to simply limit the amount of processor usage in continuous while : script scenarios without spawning endless sleep processes as well. After beating the manpages, I... (14 Replies)
I need help in script.
I want my one script execute every time at 6:30 am and i have no cron access.
So i am putting sleep command there , Script may took half an hour 35 min , it depend upon queries how much it take time, but that is not issue,
So i want according to stop time of... (15 Replies)
Hello all,
I've a small script where it checks for the existence of a particular file and sleeps for 5 seconds if it doesn't exist. I would like to send the sleep output to background so that I don't see so many sleep messages in the build output.
#!/bin/sh -x
until
do
sleep 3
done
echo... (17 Replies)
Hi All,
We have a process which is running for last 2 years well and good in production. But suddenly yesterday there was issue we faced in the process.
The actual process is what it does like below.
1. Receive the files in NAS directory(N/w attached storage).
2. Trigger the... (11 Replies)