Disable
the ctrl + Alt +
delete key combination,
one need to mask a service. This is like disabling a service,
Run the
following command:
[root@RHEL7
~]# ln -sf /dev/null /etc/systemd/system/ctrl-alt-del.target
Or
[root@RHEL7
~]# systemctl mask ctrl-alt-del.target
Created
symlink from /etc/systemd/system/ctrl-alt-del.target to /dev/null.
NOTE: systemd will recognize units symlinked to /dev/null and show them as masked. If one try to
send key combination, this will fail with following similar error.
However
above steps will not disable ctrl
+ Alt + delete key
combination, in GUI mode. To disable it in GUI change keyboard settings.
Navigate
to Applications -> System Tools ->
Settings -> Keyboard -> Shortcuts
-> System
Set
value of `Logout` as Disabled
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