Automatically reboot on kernel panic

Linux can automatically reboot after a kernel panic. The sysctl /proc/sys/kernel/panic controls this; 0 (default) disables the behavior, while any value greater than zero is the number of seconds to wait before reboot. This can be made persistent by setting in /etc/sysctl.conf:

kernel.panic = 5

Linux will wait 5 seconds before automatically rebooting.

Compiling a single Linux kernel module

make -C /lib/modules/`unam e -r`/build M=`pwd`

Disable IPv6

Add ipv6.disable=1 as a kernel boot parameter.

Empty disk cache

Forces the Linux kernel to discard/invalidate all disk caches.

echo 3 > /proc/sys/vm/drop_caches


SamatsWiki: CheatSheet/LinuxKernel (last edited 2011-02-08 01:53:47 by SamatJain)