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 V7
clock_getcpuclockid
CLOCK_GETCPUCLOCKID(3) Linux Programmer's Manual CLOCK_GETCPUCLOCKID(3)NAME
clock_getcpuclockid - obtain ID of a process CPU-time clock
SYNOPSIS
#include <time.h>
int clock_getcpuclockid(pid_t pid, clockid_t *clock_id);
Link with -lrt (only for glibc versions before 2.17).
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
clock_getcpuclockid():
_POSIX_C_SOURCE >= 200112L
DESCRIPTION
The clock_getcpuclockid() function obtains the ID of the CPU-time clock of the process whose ID is pid, and returns it in the location
pointed to by clock_id. If pid is zero, then the clock ID of the CPU-time clock of the calling process is returned.
RETURN VALUE
On success, clock_getcpuclockid() returns 0; on error, it returns one of the positive error numbers listed in ERRORS.
ERRORS
ENOSYS The kernel does not support obtaining the per-process CPU-time clock of another process, and pid does not specify the calling
process.
EPERM The caller does not have permission to access the CPU-time clock of the process specified by pid. (Specified in POSIX.1-2001; does
not occur on Linux unless the kernel does not support obtaining the per-process CPU-time clock of another process.)
ESRCH There is no process with the ID pid.
VERSIONS
The clock_getcpuclockid() function is available in glibc since version 2.2.
ATTRIBUTES
For an explanation of the terms used in this section, see attributes(7).
+----------------------+---------------+---------+
|Interface | Attribute | Value |
+----------------------+---------------+---------+
|clock_getcpuclockid() | Thread safety | MT-Safe |
+----------------------+---------------+---------+
CONFORMING TO
POSIX.1-2001, POSIX.1-2008.
NOTES
Calling clock_gettime(2) with the clock ID obtained by a call to clock_getcpuclockid() with a pid of 0, is the same as using the clock ID
CLOCK_PROCESS_CPUTIME_ID.
EXAMPLE
The example program below obtains the CPU-time clock ID of the process whose ID is given on the command line, and then uses clock_get-
time(2) to obtain the time on that clock. An example run is the following:
$ ./a.out 1 # Show CPU clock of init process
CPU-time clock for PID 1 is 2.213466748 seconds
Program source
#define _XOPEN_SOURCE 600
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <time.h>
int
main(int argc, char *argv[])
{
clockid_t clockid;
struct timespec ts;
if (argc != 2) {
fprintf(stderr, "%s <process-ID>
", argv[0]);
exit(EXIT_FAILURE);
}
if (clock_getcpuclockid(atoi(argv[1]), &clockid) != 0) {
perror("clock_getcpuclockid");
exit(EXIT_FAILURE);
}
if (clock_gettime(clockid, &ts) == -1) {
perror("clock_gettime");
exit(EXIT_FAILURE);
}
printf("CPU-time clock for PID %s is %ld.%09ld seconds
",
argv[1], (long) ts.tv_sec, (long) ts.tv_nsec);
exit(EXIT_SUCCESS);
}
SEE ALSO clock_getres(2), timer_create(2), pthread_getcpuclockid(3), time(7)COLOPHON
This page is part of release 4.15 of the Linux man-pages project. A description of the project, information about reporting bugs, and the
latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.
Linux 2017-09-15 CLOCK_GETCPUCLOCKID(3)