---

sudo tee /etc/polkit-1/rules.d/60-disable-shutdown-reboot.rules <<EOF
polkit.addRule(function(action, subject) {
    if (action.id == "org.freedesktop.login1.power-off" ||
        action.id == "org.freedesktop.login1.power-off-multiple-sessions" ||
        action.id == "org.freedesktop.login1.reboot" ||
        action.id == "org.freedesktop.login1.reboot-multiple-sessions" ||
        action.id == "org.freedesktop.login1.suspend" ||
        action.id == "org.freedesktop.login1.hibernate") {
        return polkit.Result.NO;
    }
});
EOF