diff options
Diffstat (limited to 'Documentation/sysrq.txt')
| -rw-r--r-- | Documentation/sysrq.txt | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/Documentation/sysrq.txt b/Documentation/sysrq.txt index 2a4cdda4828e..8cb4d7842a5f 100644 --- a/Documentation/sysrq.txt +++ b/Documentation/sysrq.txt @@ -129,9 +129,9 @@ On all - write a character to /proc/sysrq-trigger. e.g.: * Okay, so what can I use them for? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -Well, un'R'aw is very handy when your X server or a svgalib program crashes. +Well, unraw(r) is very handy when your X server or a svgalib program crashes. -sa'K' (Secure Access Key) is useful when you want to be sure there is no +sak(k) (Secure Access Key) is useful when you want to be sure there is no trojan program running at console which could grab your password when you would try to login. It will kill all programs on given console, thus letting you make sure that the login prompt you see is actually @@ -143,20 +143,20 @@ IMPORTANT: such. :IMPORTANT useful when you want to exit a program that will not let you switch consoles. (For example, X or a svgalib program.) -re'B'oot is good when you're unable to shut down. But you should also 'S'ync -and 'U'mount first. +reboot(b) is good when you're unable to shut down. But you should also +sync(s) and umount(u) first. -'C'rash can be used to manually trigger a crashdump when the system is hung. +crash(c) can be used to manually trigger a crashdump when the system is hung. Note that this just triggers a crash if there is no dump mechanism available. -'S'ync is great when your system is locked up, it allows you to sync your +sync(s) is great when your system is locked up, it allows you to sync your disks and will certainly lessen the chance of data loss and fscking. Note that the sync hasn't taken place until you see the "OK" and "Done" appear on the screen. (If the kernel is really in strife, you may not ever get the OK or Done message...) -'U'mount is basically useful in the same ways as 'S'ync. I generally 'S'ync, -'U'mount, then re'B'oot when my system locks. It's saved me many a fsck. +umount(u) is basically useful in the same ways as sync(s). I generally sync(s), +umount(u), then reboot(b) when my system locks. It's saved me many a fsck. Again, the unmount (remount read-only) hasn't taken place until you see the "OK" and "Done" message appear on the screen. @@ -165,11 +165,11 @@ kernel messages you do not want to see. Selecting '0' will prevent all but the most urgent kernel messages from reaching your console. (They will still be logged if syslogd/klogd are alive, though.) -t'E'rm and k'I'll are useful if you have some sort of runaway process you +term(e) and kill(i) are useful if you have some sort of runaway process you are unable to kill any other way, especially if it's spawning other processes. -"'J'ust thaw it" is useful if your system becomes unresponsive due to a frozen +"just thaw it(j)" is useful if your system becomes unresponsive due to a frozen (probably root) filesystem via the FIFREEZE ioctl. * Sometimes SysRq seems to get 'stuck' after using it, what can I do? |