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man: document the new Ctrl-Alt-Del magic
author
Lennart Poettering
<lennart@poettering.net>
Wed, 28 Jan 2015 01:33:22 +0000
(
02:33
+0100)
committer
Lennart Poettering
<lennart@poettering.net>
Wed, 28 Jan 2015 01:33:22 +0000
(
02:33
+0100)
man/systemd.xml
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diff --git
a/man/systemd.xml
b/man/systemd.xml
index e0e8d37a90ade54c1788838a6cbc0f796db2b9b3..d020582b539cb1ea38f2d4a2e493b208fa3d142b 100644
(file)
--- a/
man/systemd.xml
+++ b/
man/systemd.xml
@@
-627,10
+627,19
@@
<listitem><para>Upon receiving this
signal the systemd system manager will
start the
<listitem><para>Upon receiving this
signal the systemd system manager will
start the
- <filename>ctrl-alt-del.target</filename>
unit. This
- is mostly equivalent to
+ <filename>ctrl-alt-del.target</filename>
+
unit. This
is mostly equivalent to
<command>systemctl start
<command>systemctl start
- ctl-alt-del.target</command>.</para>
+ 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>
<para>systemd user managers
treat this signal the same way as
<para>systemd user managers
treat this signal the same way as