6

In win7, when I want to restart computer via keyboard until my operating system hasn't been loaded yet, I press Ctrl+Alt+Del.

What is equivalent to this command in Ubuntu?

(Note that I'm not asking for Task manager).

I wish to restart it if, for example, I pressed F10 but BIOS didn't load successfully so I have to reboot it. I really don't like brute way (using physical shutdown button).

  • Do you want to do this as a rescue operation because the mouse does not work, or because you want a convenient way to reboot? Or for some other reason (please specify)? – sudodus Jan 12 '18 at 19:13
  • 1
    To slightly improve upon the not-exactly-perfect-but-still-hopefully-useful workaround of using the terminal, with recent versions of Ubuntu which use systemd (16.04 or possibly earlier), you don't need sudo — just shutdown -r now will work. (The -r flag means restart, and now specifies the time.) Depending on which desktop environment you use (Unity, GNOME, XFCE?) you can specify a custom hotkey, for this command. – aplaice Jan 12 '18 at 19:15
  • 1
    @aplaice reboot is shorter – Rinzwind Jan 12 '18 at 19:30
  • 2
    Responding to your edited original question: I suggest the 'SysRq REISUB' method to get a soft reboot. SysRq is often on the PrintScreen key: Press Alt + PrintScreen all the time, and then slowly (one key after another) the letter keys R E I S U B. See this link, en.wikipedia.org/wiki/Magic_SysRq_key ; and this link, askubuntu.com/questions/968024/… – sudodus Jan 12 '18 at 19:37
  • 2
    in KDE, Mate and Cinnamon desktops, Ctrl+Alt+Del will bring up the shut down menu when you can choose to log off, restart or shutdown. – ravery Jan 12 '18 at 20:15
5

SysRq REISUB

Responding to your edited original question: I suggest the 'SysRq REISUB' method. This is a way to reboot linux systems gracefully, that often works to keep the file system healthy (in contrast to hard poweroff).

SysRq is often on the PrintScreen key:

Press Alt + PrintScreen continuously, sometimes the Fn key is involved too (in laptops),

and then slowly (one key after another) the keys R E I S U B to reboot.

When you press the 'letter keys' you need not specify caps lock or shift.


The corresponding sequence to shut down the computer gracefully is:

Press Alt + PrintScreen continuously, sometimes the Fn key is involved too (in laptops),

and then slowly (one key after another) the keys R E I S U O to shut down.

B 'Boot' is replaced by O 'Off'.


You find more details at the following links,

en.wikipedia.org/wiki/Magic_SysRq_key

How to call up high priority responsive terminal window, even if Xubuntu is hopelessly frozen

  • 3
    REISSUB= Reboot Even If System Utterly Broken. Might be useful to specify caps lock not necessary. – WinEunuuchs2Unix Jan 18 '18 at 12:50
  • 1
    @pa4080, Thanks for finding and fixing the 'left over from my copy-paste' :-) – sudodus Mar 13 '18 at 8:19
  • I've just tried this - it's working like a charm. – pa4080 Mar 13 '18 at 8:27

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.