Simple guide to harden your linux operation system (Focused on fedora)

Installing proprietary codecs

To install proprietary codecs, you need to run this command

run0 sh -c 'dnf config-manager --add-repofile=https://negativo17.org/repos/fedora-multimedia.repo'

And then run this

run0 sh -c 'dnf install ffmpeg'

Installing trivalent

run0 sh -c 'dnf config-manager addrepo --from-repofile=https://repo.secureblue.dev/secureblue.repo'

run0 sh -c 'dnf install trivalent'

run0 sh -c 'dnf copr enable secureblue/trivalent'

run0 sh -c 'dnf install trivalent-subresource-filter'

Removing sudo, su, and pkexec entirely in favor of run0

To remove sudo, su and pkexec, run this command

run0 sh -c 'dnf remove sudo su pkexec --setopt protected_packages='

And run this command

run0 rm /usr/bin/sudo /usr/bin/su /usr/bin/pkexec