最後更新: 2021-09-30

# Enable sysrq-trigger

echo "bitmask" >/proc/sys/kernel/sysrq

#

echo 1 > /proc/sys/kernel/sysrq

# c => crash

echo c > /proc/sysrq-trigger

# b => 叫 kernel 立即 reboot !!

echo b > /proc/sysrq-trigger

# o => 關機

echo o > /proc/sysrq-trigger

# s     Will attempt to sync all mounted filesystems.

# u     Will attempt to remount all mounted filesystems read-only.