+ ctl-alt-del.target</command>. If this
+ signal is received more often than 7
+ times per 2s an immediate reboot is
+ triggered. Note that pressing
+ Ctrl-Alt-Del on the console will
+ trigger this signal. Hence, if a
+ reboot is hanging pressing
+ Ctrl-Alt-Del more than 7 times in 2s
+ is a relatively safe way to trigger an
+ immediate reboot.</para>