User:Medavox

Commands
The key combination consists of Alt, SysRq and another key, which controls the command issued (as shown in the table below). Some keyboards may not provide a separate SysRq key. In this case, a separate "PrintScrn" key should be present. Under graphical environments (such as GNOME or KDE) 'Alt'+'PrintScrn/SysRq'+key combination generally only leads to a screenshot being dumped. To avoid this Print Screen feature the magic SysRq combination should include the Ctrl, becoming 'Ctrl'+'Alt'+'SysRq'+key. For the same purposes the AltGr key, if present, can be used in place of the Alt key. On some laptops SysRq is accessible only by pressing 'Fn'. In this case the combination is a bit trickier: hold 'Alt', hold 'Fn', hold 'SysRq', release 'Fn', press key.

Uses
A common use of the magic SysRq key is to perform a safe reboot of a Linux computer which has otherwise locked up. This can prevent a fsck being required on reboot and gives some programs a chance to save emergency backups of unsaved work. The QWERTY mnemonic: "Reboot Even If System Utterly Broken" or simply the word "BUSIER" read backwards, are often used to remember the following Sysrq-keys sequence:

unRaw     (take control of keyboard back from X), tErminate (send SIGTERM to all processes, allowing them to terminate gracefully), kIll     (send SIGKILL to all processes, forcing them to terminate immediately), Sync    (flush data to disk), Unmount (remount all filesystems read-only), reBoot. In practice, each command may require a few seconds to complete, especially if feedback is unavailable from the screen due to a freeze or display corruption.
 * 1) Hold down the Alt and SysRq (Print Screen) keys.
 * 2) While holding those down, type the following keys in order, several seconds apart: REISUB
 * 3) Computer should reboot.

When magic SysRq keys are used to kill a frozen graphical program, the program has no chance to restore text mode. This can make everything unreadable. The commands  (part of SVGAlib) and   can restore text mode and make the console readable again.

On distributions that do not include a  executable, the key command 'Ctrl'+'Alt'+'F1' may sometimes to force a return to a text console. (Use 'F1', 'F2', 'F3', ..., 'F(n)', where 'n' is the highest number of text consoles set up by the distribution. 'Ctrl'+'Alt'+ 'F(n+1)' would normally be used to reenter GUI mode on a system on which the X server has not crashed.)

Table of the Russian alphabet
The Russian alphabet is as follows:

  Consonant letters represent both "soft" (palatalized, represented in the IPA with a $⟨⟩$) and "hard" consonant phonemes. If consonant letters are followed by vowel letters, the soft/hard quality of the consonant depends on whether the vowel is meant to follow "hard" consonants $⟨а, о, э, у, ы⟩$ or "soft" consonants $⟨я, ё, е, ю, и⟩$; see below. A soft sign indicates $⟨Ь⟩$ palatalization of the preceding consonant without adding a vowel. However, in modern Russian six consonant phonemes do not have phonemically distinct "soft" and "hard" variants (except in foreign proper names) and do not change "softness" in the presence of other letters:, and are always hard; , and are always soft. See Russian phonology for details.


 * An alternate form of the letter El (Л л ) closely resembles the Greek letter for lambda (Λ λ ).

Frequency
The frequency of characters in a corpus of written Russian was found to be as follows: