SLEEP(3) Linux Programmer's Manual SLEEP(3)NAME
sleep - Sleep for the specified number of seconds
SYNOPSIS
#include <unistd.h>
unsigned int sleep(unsigned int seconds);
DESCRIPTION
sleep() makes the calling thread sleep until seconds seconds have elapsed or a signal arrives which is not ignored.
RETURN VALUE
Zero if the requested time has elapsed, or the number of seconds left to sleep, if the call was interrupted by a signal handler.
CONFORMING TO
POSIX.1-2001.
BUGS
sleep() may be implemented using SIGALRM; mixing calls to alarm(2) and sleep() is a bad idea.
Using longjmp(3) from a signal handler or modifying the handling of SIGALRM while sleeping will cause undefined results.
SEE ALSO alarm(2), nanosleep(2), signal(2), signal(7)COLOPHON
This page is part of release 3.27 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU 2010-02-03 SLEEP(3)
Check Out this Related Man Page
SLEEP(3) Linux Programmer's Manual SLEEP(3)NAME
sleep - sleep for the specified number of seconds
SYNOPSIS
#include <unistd.h>
unsigned int sleep(unsigned int seconds);
DESCRIPTION
sleep() makes the calling thread sleep until seconds seconds have elapsed or a signal arrives which is not ignored.
RETURN VALUE
Zero if the requested time has elapsed, or the number of seconds left to sleep, if the call was interrupted by a signal handler.
CONFORMING TO
POSIX.1-2001.
BUGS
sleep() may be implemented using SIGALRM; mixing calls to alarm(2) and sleep() is a bad idea.
Using longjmp(3) from a signal handler or modifying the handling of SIGALRM while sleeping will cause undefined results.
SEE ALSO alarm(2), nanosleep(2), signal(2), signal(7)COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
GNU 2010-02-03 SLEEP(3)
I have a Solaris 2.6 machine and I execute the following:
while
do
echo looping
sleep 15
done
I would assume the looping would be printed every 15 seconds but it doesn't. consecutive looping gets printed without a 15 second gap. Any idea what might be the reason ?
Thanks (9 Replies)
If I want a script to sleep for less than a second, would I use a decimal? In other words, if I wanted my script to sleep for 1/4 of a second, would I say, SLEEP .25 ?? (5 Replies)
I'm trying generate an interrupt every 1 seconds using itimer and My clock is not running. This is what i did :
printf("about to sleep for 1 second \n");
signal(SIGALRM, wakeup);
//myTimer.it_interval.tv_sec=0;
//myTimer.it_interval.tv_usec =0;
... (5 Replies)
Does anyone know a way to sleep less than 1 second?
Sometimes when I write scripts that iterates a loop many times it would be
nice to slow things down, but sometimes 1 second is too much. (9 Replies)
Hello all,
I am starting to learn signal handling in Linux and have been trying out some simple codes to deal with SIGALRM. The code shown below sets a timer to count down. When the timer is finished a SIGALRM is produced. The handler for the signal just increments a variable called count. This... (7 Replies)
Hi,
Can someone help me with this script ....
I need a ksh script, which will search for a specific file in a directory, if file not found sleep for 10 mins and search again, if still not found sleep again for 10 mins and so on .... it should search for that file for 3 hours and if that file... (5 Replies)
Hi there,
I found a trick to easily postpone a command by a few seconds:
supernova:~# sleep 10 && command &If you logout, the command should still be executed... But not all the time.
Could anyone of you explain me why the following command is executed even after logging out:
supernova:~# sleep... (2 Replies)
I have to use rdtsc on ubuntu for performance evaluation. But i am not getting the correct value. I am placing a sleep on 10 seconds, but value i get is some 1 sec... i dont know where im going wrong?
#include<sys/time.h>
#include<time.h>
#include<stdio.h>
typedef unsigned long long ticks;
... (8 Replies)
Hi,
Following is my file output
247 Sleep 25439 NULL
259 Sleep 25460 NULL
277 Sleep 15274 NULL
361 Sleep 2 NULL
362 Sleep 202 NULL
I want to select only first column to other file
How can... (2 Replies)
So I made my own unix shell, but i want to make a background process when using the & appended to the end, so far most of the commands seem to work (except cd, but thats another story)
right now here is what I have got.
Im thinking maybe I shouldn't be using switch and maybe switch it to... (27 Replies)
Hi Forum
Im using sleep in a while loop goes around 10 times. i feed it a variable with the time i what it to sleep for eg sleep $sleepVal and then print system date and time to screen but sometimes 1 second is added to the time why is this
here my code
sleepVal=5
while
do
... (3 Replies)
Hi All,
I am new to Unix , there i am facing one problem with sleep command. that is ..
in while loop i have defined sleep function ..
my condition is like this
while #i knew this is infinite loop
do
sleep 200
echo "hello "
done.
this condition will never become .. true... (3 Replies)
Hi,
I have ascript with a recursive funtion below.
I have mentioned to sleep for 60minutes but it doesnt doing so.
Its keep on running until if /elif conditions satiesfies.
Can you pls help what is wrong here.
funcstatus ()
{
if
then
echo "`date` - Current status... (2 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)
Hi,
I am a newbie in UNIX
please help me develop code for below logic:--
I want my script to implement sleep until a specified time(date doesn't matter)
----------------------------------------
While currenttime > 14:00 and < 18:00
sleep
end while
run command
exit... (9 Replies)