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Rebooting the Magic Way | Linux Journal http://www.linuxjournal.com/content/rebooting-magic-way
Tue 20 Mar 2018 02:15:08 AM PDT archive.org

A Linux Journal article about rebooting a failing box remotely using the magic sysrq key.. without needing console access. Assumes that you compiled this support into the kernel (many distros do by default while users might not).

  1. echo 1 > /proc/sys/kernel/sysrq
  2. echo b > /proc/sysrq-trigger

Optionally: echo "kernel.sysrq = 1" >> /etc/sysctl.conf

kernel sysfs howto sysadmin sysrq linux
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