Tuesday, November 23, 2010

How to quickly reboot you Linux

Here is a quick way to reboot you Linux with kexec command. In debian first install kexec-tools package:
apt-get install kexec-tools
Once installed make your current kernel the one you want to quickly reboot into:
kexec -e
In case you would like disable fast reboot, open file located at /etc/default/kexec and set LOAD_KEXEC to false:

# Defaults for kexec initscript
# sourced by /etc/init.d/kexec and /etc/init.d/kexec-load

# Load a kexec kernel (true/false)

# Kernel and initrd image

# If empty, use current /proc/cmdline

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