a command to turn off or reboot the system

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9
votes
3answers
3k views

How can I set that only root + a given user can shut down my pc?

If I'm using Ubuntu 11.04, how can I configure it such that that only two users can shut down/suspend/hibernate my PC: the root user and one regular user?
12
votes
3answers
690 views

Why do we need the reboot function in different binaries?

Why do we need the reboot function in different binaries? shutdown -r and reboot Or do they differ in something?
8
votes
1answer
812 views

Does `shutdown -P now` safely unmount a USB drive mounted to `/dev/sdb1`?

I typically unmount my USB drive (using umount) from /dev/sdb1 before I shutdown my computer but if I shut it down using shutdown -P now and then restart it, the drive is no longer mounted. Is this ...
0
votes
1answer
97 views

Shutdown screen taking too long to pop up in Ubuntu 8.04

I am using Ubuntu 8.04, and it was working fine until a few days ago, the pop screen for ShutDown started taking too long to come(about 3 mins) and in the mean time computer freezes. However, after ...
4
votes
3answers
478 views

Do I need to halt in order to really turn power off?

I tried shutdown -f now, thinking it will do a full power off sequence. Instead, it ends with *Checking battery state... and just hangs there. Should I add -h switch to fully take power off, ...
36
votes
7answers
100k views

How to find out from the logs what caused system shutdown?

E.g. I'm seeing this in /var/log/messages: Mar 01 23:12:34 hostname shutdown: shutting down for system halt Is there a way to find out what caused the shutdown? E.g. was it run from console, or ...
52
votes
4answers
41k views

What is the difference between Halt and Shutdown commands?

What is the difference between the halt and shutdown commands?
3
votes
1answer
280 views

Can't shutdown mandriva 2010.2

I can't seem to shutdown my machine from mandriva,I have to restart to shut it down from GRUB it says "System Halted" and just freezes there I'm using the x86_64 GNOME version I've already asked on ...
17
votes
3answers
14k views

Is it possible to stop a shutdown command?

Assuming you've just entered the command shutdown -h now (or something equivalent), is there realistically anything you can do (if you're quick enough) to prevent the machine shutting down?
-1
votes
1answer
391 views

Is 'Shut down computer when finished' during Avidemux encoding stage useful?

I get the option to Shut down computer when finished during encoding stage of Avidemux. Why would I want to do that?
15
votes
5answers
7k views

How to shut down the computer after a task has been completed?

I usually start a download before I go to school. Which command should I use to automatically make the necessary saves and turn off the computer after a particular task has been completed? (Say, ...
5
votes
1answer
1k views

How to get a persistent “history”-file even after a non-clean shutdown?

I am trying Ubuntu Server 10.10 in VirtualBox. I like that the commands I run is saved in a "history"-file that can be shown with the history command. But if I just turn off VirtualBox without the ...
15
votes
5answers
24k views

Stop program running at startup in Linux

How do I stop a program running at startup in Linux. I want to remove some apps from startup to allow them to be managed by supervisord e.g apache2
8
votes
5answers
3k views

On Linux, is there an rc.local equivalent for shutdown?

I've got a few commands that I run in rc.local so they are run last in the startup sequence. I would like to know if there is a similar facility for undoing the results of those commands at shutdown, ...