In most Linux distributions, pressing '
CTRL-ALT-DELETE' will takes your system to reboot process. So, it’s not a good idea to have this option enabled at least on production servers, if someone by mistakenly does this.
We have to comment the following lines in
/etc/inittab file.
# Trap CTRL-ALT-DELETE
#ca::ctrlaltdel:/sbin/shutdown -t3 -r now