rebooting is the process of bringing down a system in a state where it will complete reinitialise, without removing power from the system. Use this tag for question related to problems with being able to reboot a system. For problems booting into a particular installed OS, use the appropriate ...

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6
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1answer
341 views

How does gnome reboot without root privileges?

I am reading the book Linux kernel development, in chapter 5 "System Call Implementation" page 77 says For example, capable(CAP_SYS_NICE) checks whether the caller has the ability to modify ...
59
votes
5answers
132k views

What is the difference between reboot , init 6 and shutdown -r now?

I just want to know difference between in reboot init 6 shutdown -r now and which is the safest and the best?
23
votes
3answers
100k views

crontab's @reboot only works for root?

man 5 crontab is pretty clear on how to use crontab to run a script on boot: These special time specification "nicknames" are supported, which replace the 5 initial time and date fields, and ...
34
votes
4answers
8k views

Save entire process for continuation after reboot

I developed an algorithm for a fairly hard problem in mathematics which is likely to need several months to finish. As I have limited resources only, I started this on my Ubuntu 12.04 (x86) laptop. ...
17
votes
5answers
19k views

How can I tell GRUB I want to reboot into Windows—before I reboot?

I have a dual boot Linux/windows system set up, and frequently switch from one to the other. I was thinking if I could add a menu item in one of the menus to reboot directly into windows, without ...
18
votes
1answer
5k views

Why are reboot, shutdown and poweroff symlinks to systemctl?

In Arch Linux, if I do ls -l in /sbin, I can see that reboot, shutdown and poweroff are all symlinks to /usr/bin/systemctl. But issuing reboot, shutdown and systemctl commands obviously does not all ...
3
votes
2answers
3k views

GNOME license not accepted issue when system has been rebooted

GNOME Desktop has been installed on CentOS7 using sudo yum -y groups install "GNOME Desktop" and when startx is executed the desktop starts. However, when the system reboots the following issue occurs:...
58
votes
6answers
5k views

Why does reboot and poweroff require root privileges? [duplicate]

To restart or shut off Linux from the terminal, one can use reboot and poweroff, respectively. However, both of these commands require root privileges. Why is this so? What security risk is posed by ...
8
votes
1answer
6k views

How to continue a script after it reboots the machine?

I'm writing a shell script in bash. At some point in the script, it detects that the machine needs to be rebooted before continuing. It issues: sudo reboot When the machine comes back up, there ...
6
votes
1answer
906 views

How to have Linux wipe/randomize/sanitize RAM at shutdown?

For mysterious reasons I still double boot sometimes into Windows. My problem is that I fear that information may leak because the RAM memory is accessible to Windows. (the Linux partitions are ...
6
votes
2answers
2k views

How can I ensure only the root user have the right to halt/reboot the system?

CentOS Linux by default allows all users to have permission to "halt" & "reboot" the system by using the commands halt and reboot. How can I configure my system so that only the root user has the ...
4
votes
0answers
516 views

Fedora 20 freezes on reboot and poweroff

This freeze happens when I try to reboot, shutdown -r now, poweroff, shutdown -h now etc. One time it freezes on my desktop image, and the other time it freezes on the fedora logo. I am dual booting ...
2
votes
0answers
336 views

how does auto reboot happens?

For "no reason?" my machine is rebooting. last reboot brings lines like this: reboot system boot 3.13.0-24-generi Tue Dec 9 18:57 - 19:09 (00:11) reboot system boot 3.13.0-24-generi ...
0
votes
1answer
955 views

Find out what caused my Ubuntu rebooting?

My Ubuntu 14.04 on Thinkpad T400 just rebooted automatically. Before that, my screen just became unresponsive. My memory and swap were mostly used, mainly by webpages opened in Chrome and some ...