2.2.1 Ensure X Window System is not installed

Audit

Verify X Windows System is not installed:

dpkg-query -W -f='${binary:Package}\t${Status}\t${db:Status-Status}\n' xserver-xorg* | grep -Pi '\h+installed\b'

Nothing should be returned.

Remediation

Remove the X Windows System packages:

apt purge xserver-xorg*