Disable and reenable GUI and other options for a desktop that is used as a server. Applies to Gnome.

gui_attendedAccess_script.

#!/bin/bash

# Function to disable GUI and power management
disable_gui_power() {
    echo "Disabling GUI and power management..."
    
    # Disable sleep and hibernate
    systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target

    # Disable GNOME power management
    mkdir -p /etc/dconf/db/local.d/
    cat << EOF > /etc/dconf/db/local.d/00-power
[org/gnome/settings-daemon/plugins/power]
sleep-inactive-ac-type='nothing'
sleep-inactive-battery-type='nothing'
EOF

    dconf update

    # Disable GNOME screen blanking
    su - $SUDO_USER -c "gsettings set org.gnome.desktop.session idle-delay 0"

    # Disable power management in NetworkManager
    cat << EOF > /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
[connection]
wifi.powersave = 2
EOF

    # Switch to multi-user target
    systemctl set-default multi-user.target

    # Disable GDM
    systemctl disable gdm

    # Mask graphical-session-pre.target
    systemctl mask graphical-session-pre.target

    echo "GUI and power management features have been disabled. The system will boot to text mode after reboot."
}

# Function to enable GUI and power management
enable_gui_power() {
    echo "Enabling GUI and power management..."
    
    # Re-enable sleep and hibernate
    systemctl unmask sleep.target suspend.target hibernate.target hybrid-sleep.target

    # Remove GNOME power management settings
    rm -f /etc/dconf/db/local.d/00-power
    dconf update

    # Re-enable GNOME screen blanking (set to 300 seconds / 5 minutes)
    su - $SUDO_USER -c "gsettings set org.gnome.desktop.session idle-delay 300"

    # Remove NetworkManager power management settings
    rm -f /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

    # Switch back to graphical target
    systemctl set-default graphical.target

    # Enable GDM
    systemctl enable gdm

    # Unmask graphical-session-pre.target
    systemctl unmask graphical-session-pre.target

    echo "GUI and power management features have been re-enabled. The system will boot to graphical mode after reboot."
}

# Check if script is run with sudo
if [ "$EUID" -ne 0 ]; then
    echo "Please run this script with sudo"
    exit 1
fi

# Main menu
while true; do
    echo "Choose an option:"
    echo "1) Disable GUI and power management"
    echo "2) Enable GUI and power management"
    echo "3) Exit"
    read -p "Enter your choice (1-3): " choice

    case $choice in
        1)
            disable_gui_power
            break
            ;;
        2)
            enable_gui_power
            break
            ;;
        3)
            echo "Exiting..."
            exit 0
            ;;
        *)
            echo "Invalid option. Please try again."
            ;;
    esac
done

echo "Reboot the system to apply changes."