#!/bin/bash -e
 
function enable_cgroup_memory()
{
    set +e
    grep -q '^GRUB_CMDLINE_LINUX=".*cgroup_enable=memory swapaccount=1' /etc/default/grub
    if [ $? -ne 0 ]
    then
        set -e
        sudo sed -E 's>^(GRUB_CMDLINE_LINUX=")>\1cgroup_enable=memory swapaccount=1 >' /etc/default/grub -i
        sudo update-grub
    fi
    set -e
}
 
function enable_user_namespace()
{
    sudo apt-get install linux-generic-lts-trusty
    set +e
    if dpkg -l | grep -q '^ii  xserver-xorg '
    then
        set -e
        sudo apt-get install xserver-xorg-lts-trusty libgl1-mesa-glx-lts-trusty
    fi
    set -e
}
 
function install_lxc()
{
    enable_cgroup_memory
    enable_user_namespace
 
    sudo apt-get install lxc debootstrap bridge-utils
    lxc-checkconfig
}
 
function install_lxc_web()
{
    wget http://lxc-webpanel.github.com/tools/install.sh -O - | sudo bash
}
 
function reboot_if_required()
{
    if [ -f /var/run/reboot-required ]
    then
        shutdown reboot
    fi
}
 
 
# MAIN
install_lxc
install_lxc_web
reboot_if_required