Ah, okay, I was smoking something in my teens. Or maybe thinking of Kernel programming?? Anyway, in Linux, the man pages specifically states:
So develop_5889, don't use the alarm()/sigtrap routines -- just use sleep(). And actually, it makes more sense to call sleep() with the configured idle-time minus the amount of time that the TTY has been idle.
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 CENTOS
vlock
VLOCK(1) General Commands Manual VLOCK(1)NAME
vlock - Virtual Console lock program
SYNOPSIS
vlock
vlock [ -a,--all ] [ -c,--current ] [ -h,--help ] [ -v,--version ]
DESCRIPTION
vlock is a program to lock one or more sessions on the Linux console. This is especially useful for Linux machines which have multiple
users with access to the console. One user may lock his or her session(s) while still allowing other users to use the system on other vir-
tual consoles. If desired, the entire console may be locked and virtual console switching disabled.
By default, only the current VC (virtual console) is locked. With the -a,-all option all VCs are locked. The locked VCs cannot be
unlocked without the invoker's password. And, for the paranoid, vlock makes it a trying experience for those attempting to guess the pass-
word, so unauthorized access to session(s) is highly unlikely.
Please note that it is entirely possible to completely lock yourself out of the console with the -a,--all option if you cannot remember
your password! Unless you are able to kill vlock by logging in remotely via a serial terminal or network, a hard reset is the only method
of ``unlocking'' the display.
vlock works for console sessions primarily. However, there is support for trying to lock non-console sessions as well, but that support
has not been well tested.
OPTIONS -a,--all
Lock all console sessions and disable VC switching.
-c,--current
Lock the current session (this is the default).
-h,--help
Print a brief help message.
-v,--version
Print the version number of vlock.
AUTHOR
Michael K. Johnson <johnsonm@redhat.com>
Linux User's Manual 16 May 1996 VLOCK(1)