Based on examination of the linux/kernel/reboot.c code, it is clear
that there are two supported functions that the Ctrl-Alt-Del sequence
hard Immediately reboot the computer without calling sync(2) and
without any other preparation. This is the default.
soft Make the kernel send the SIGINT (interrupt) signal to the init
process (this is always the process with PID 1). If this
option is used, the init(8) program must support this feature.
Since there are now several init(8) programs in the Linux
community, please consult the documentation for the version
that you are currently using.
When the command is run without any argument, it will display the
The function of ctrlaltdel is usually set in the /etc/rc.local file.
This page is part of the util-linux (a random collection of Linux
utilities) project. Information about the project can be found at
⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have a
bug report for this manual page, send it to
email@example.com. This page was obtained from the
project's upstream Git repository
2017-03-13. If you discover any rendering problems in this HTML ver‐
sion of the page, or you believe there is a better or more up-to-date
source for the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original man‐
ual page), send a mail to firstname.lastname@example.org
util-linux October 2015 CTRLALTDEL(8)