Reboot Linux system on freeze

Sooner or later, now matter how stable your system may be, you will experience the situation where your system completely freezes and you can't do anything, not even call a terminal or log out of the session. In those cases, the Linux kernel has a feature that might interest you.

While holding Alt + SysRq, type R E I S U B (without spaces) and the computer will reboot. For a detailed explanation about what the entered characters do, have a look on the Wikipedia page here: http://en.wikipedia.org/wiki/Magic_SysRq_key

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