Make any Instance Ready for Remote Desktop or RDP (Chrome Remote Desktop)

install.sh

#!/bin/bash -x
#
# Startup script to install Chrome remote desktop and a desktop environment.
#
# See environmental variables at then end of the script for configuration
#

# Run this script by root
# a user will get created with name: user and password: root

# Make Instance Ready for Remote Desktop or RDP

# Branding

printf """
      Remote Desktop Setup
      By Pradyumna Krishna © 2020
      Github : https://github.com/PradyumnaKrishna
""";

# User Creation
user=user

# Creation of user
useradd -m user

# Add user to sudo group
adduser user sudo

# Set password of user to 'root'
echo 'user:root' | sudo chpasswd

# Change default shell from sh to bash
sed -i 's/\/bin\/sh/\/bin\/bash/g' /etc/passwd

function install_desktop_env {
  PACKAGES="desktop-base xscreensaver"

  if [[ "$INSTALL_XFCE" != "yes" && "$INSTALL_CINNAMON" != "yes" ]] ; then
    # neither XFCE nor cinnamon specified; install both
    INSTALL_XFCE=yes
    INSTALL_CINNAMON=yes
  fi

  if [[ "$INSTALL_XFCE" = "yes" ]] ; then
    PACKAGES="$PACKAGES xfce4"
    echo "exec xfce4-session" > /etc/chrome-remote-desktop-session
    [[ "$INSTALL_FULL_DESKTOP" = "yes" ]] && \
      PACKAGES="$PACKAGES task-xfce-desktop"
  fi

  if [[ "$INSTALL_CINNAMON" = "yes" ]] ; then
    PACKAGES="$PACKAGES cinnamon-core"
    echo "exec cinnamon-session-cinnamon2d" > /etc/chrome-remote-desktop-session
    [[ "$INSTALL_FULL_DESKTOP" = "yes" ]] && \
      PACKAGES="$PACKAGES task-cinnamon-desktop"
  fi

  DEBIAN_FRONTEND=noninteractive \
    apt-get install --assume-yes $PACKAGES $EXTRA_PACKAGES

  systemctl disable lightdm.service
}

function download_and_install { # args URL FILENAME
  curl -L -o "$2" "$1"
  dpkg --install "$2"
  apt-get install --assume-yes --fix-broken
}

function is_installed {  # args PACKAGE_NAME
  dpkg-query --list "$1" | grep -q "^ii" 2>/dev/null
  return $?
}

# Configure the following environmental variables as required:
INSTALL_XFCE=yes
INSTALL_CINNAMON=no
INSTALL_CHROME=yes
INSTALL_FULL_DESKTOP=no

# Any additional packages that should be installed on startup can be added here
EXTRA_PACKAGES="less bzip2 zip unzip"

apt-get update

! is_installed chrome-remote-desktop && \
  download_and_install \
    https://dl.google.com/linux/direct/chrome-remote-desktop_current_amd64.deb \
    /tmp/chrome-remote-desktop_current_amd64.deb

install_desktop_env

[[ "$INSTALL_CHROME" = "yes" ]] && \
  ! is_installed google-chrome-stable && \
  download_and_install \
    https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb \
    /tmp/google-chrome-stable_current_amd64.deb

echo "Chrome remote desktop installation completed"

# Adding user to CRP group
adduser $user chrome-remote-desktop

# Finishing Work
printf '\nVisit http://remotedesktop.google.com/headless and Copy the command after authentication\n'
read -p "Give Command: " CRP
su - $user -c """$CRP"""
service chrome-remote-desktop start

printf "\nFinished Succesfully"