You just need sleep() here. In the C library and system calls, sleep does not take an argument, as it does with perl and the shell.
just a tiny correction: sleep does take an argument, which is number of seconds to sleep
On my SysV box
/usr/include/unistd.h:extern unsigned sleep(unsigned);
how can I lock my keyboard while I'm away from the computer without using lock command. What other commands gives me the option to lock keyboard device?
thanks (7 Replies)
We are using software (Pegasys) which runs on SunOS 5.8 and reads images from a Philips nuclear camera. The software is designed to run from the console. I need to be able to capture the images it produces on the display. The caveat is that I cannot use the X Windows display because the X Server... (3 Replies)
I need to find the idle time on a machine in the manner: How long time ago somebody did the last action with mouse or keyboard? Unfortunately "w" doesn't do this. It produced the following output on a machine a user was actually working on with an application:
15# w
15:55:28 up 15 days, ... (1 Reply)
:confused:Hi
This was installed on the Linux box a few weeks back by a guy that no longer works for us. All worked fine until last week. Now when we connect its just a blank screen with no icons.
I get a whole bunch of errors when starting the service too:
Tue Feb 23 14:29:45 2010
... (1 Reply)
Hello all,
If anyone has time, I have a few questions:
How do I do the following in Linux. We are using Red Hat and Oracle Enterprise Linux, which is based on Red Hat too.
1. How to lock the account after a few (like 3) invalid password attempts?
2. How do you lock a screen after 30... (1 Reply)
How would i force The server console to be locked automatically after 5 minutes ?
I want it to happen for X as well as terminal session of the machine.
My Linux distribution details.
LSB Version: :core-3.1-ia32:core-3.1-noarch:graphics-3.1-ia32:graphics-3.1-noarch
Distributor ID:... (11 Replies)
Hi all,
I have to test some user priviliges. The goal is to be sure that an unauthorized user can't restart some modules (ssh, mysql etc...).
I'm trying to automate it with a shell script but in same cases I got the syslog broadcast message.
Is there any way to simply get a return code... (3 Replies)
What kind of problems can be faced if any session which connects to unix server is open for longer time?
How to find out from how much time that session is idle? :) (1 Reply)
Discussion started by: anandgodse
1 Replies
LEARN ABOUT LINUX
sleep
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)