install-gui.sh

#!/bin/bash
# install-gui.sh
# 
# Runs as mininet user.
#
# This script sets up the desktop environment on top of a base image.

# ------------- Set up desktop environment -------------

echo "Setting up desktop environment"

# Remove kernel boot options that will prevent the gui from running
sudo sed -i s/text// /etc/default/grub
sudo sed -i s/ipv6.disable=1// /etc/default/grub
sudo update-grub

sudo apt-get install -y xorg lxde systemd-shim

#TODO: add backgrounds folder
sudo mkdir -p /usr/share/backgrounds
#TODO: change background
# Remove wallpaper, change background color
sudo sed -i 's/wallpaper_mode=1/wallpaper_mode=0/g' /usr/share/lxde/pcmanfm/LXDE.conf
sudo sed -i 's/desktop_bg=#000000/desktop_bg=#104187/g' /usr/share/lxde/pcmanfm/LXDE.conf

sudo sed -i 's/lang=1/lang=0/g' /etc/lxdm/default.conf
sudo sed -i 's/bottom_pane=1/bottom_pane=0/g' /etc/lxdm/default.conf
sudo sed -i 's/disable=0/disable=1/g' /etc/lxdm/default.conf

# Allow VM to be rebooted from GUI
echo "session required pam_systemd.so" | sudo tee --append /etc/pam.d/lxdm

wget -O onos.png "https://gerrit.onosproject.org/gitweb?p=onos-vm.git;a=blob_plain;hb=refs/heads/onos-tutorial-1.6;f=onos.png"
sudo cp onos.png /usr/share/backgrounds/default.png

# Change LXTerminal default colors
sudo sed -i 's/bgcolor=#000000000000/bgcolor=#ffffffffffff/g' /usr/share/lxterminal/lxterminal.conf
sudo sed -i 's/fgcolor=#aaaaaaaaaaaa/fgcolor=#000000000000/g' /usr/share/lxterminal/lxterminal.conf

# Disable screensaver
sudo sed -i '/screensaver/d' /etc/xdg/lxsession/LXDE/autostart
cat > /home/mininet/.xsessionrc << EOF
# disable screensaver
xset s off
# disable dpms (standby)
xset -dpms
EOF