User:RichiH/PDF/Magic SysReq
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From Magic SysRq key
Action | QWERTY | Dvorak | AZERTY |
---|---|---|---|
Set the console log level, which controls the types of kernel messages that are output to the console | 0 through 9 | 0 through 9 | 0 through 9 (without using shift) |
Immediately reboot the system, without unmounting partitions or syncing | b | x | b |
Reboot kexec and output a crashdump | c | j | c |
Display all currently held Locks | d | e | d |
Send the SIGTERM signal to all processes except init (PID 1) | e | . | e |
Call oom_kill, which kills a process to alleviate an OOM condition | f | u | f |
When using Kernel Mode Setting, provides emergency support for switching back to the kernel's framebuffer console[1] | g | i | g |
Output a terse help document to the console Any key which is not bound to a command should also do the trick |
h | d | h |
Send the SIGKILL signal to all processes except init | i | c | i |
Kill all processes on the current virtual console (Can be used to kill X and svgalib programs, see below) This was originally designed to imitate a Secure Access Key |
k | t | k |
Show a stack backtrace of all currently executing tasks | l | n | l |
Output current memory information to the console | m | m | , |
Reset the nice level of all high-priority and real-time tasks | n | b | n |
Shut off the system | o | r | o |
Output the current registers and flags to the console | p | l | p |
Display all active high-resolution timers and clock sources. | q | ' | a |
Switch the keyboard from raw mode, the mode used by programs such as X11 and svgalib, to XLATE mode | r | p | r |
Sync all mounted filesystems | s | o | s |
Output a list of current tasks and their information to the console | t | y | t |
Remount all mounted filesystems in read-only mode | u | g | u |
Output Voyager SMP processor information | v | k | v |
Display list of blocked (D state) tasks | w | , | z |