snapshot guest user account in to a skeleton on ubuntu 16.04

guest2skel.sh

#!/bin/bash

# Version: 1.1.0
# Date: 19/03/2016
# Origin: http://cascaval.com
# 
# UBUNTU 16.04 
# Start a guest session and customize it as you like, then switch users to the main/admin user, and run this script.
# The next time you login in to a "fresh" guest, the guest account will be setup from the skeleton.

# 1) Find the current guest's home directory
guestdir=`find /tmp -maxdepth 1 -type d -iname 'guest-*'`

if [ "$guestdir" == "" ]; then
	echo "The guest's home directory was not found. Is the guest logged in?"
	exit 1
fi

if [[ $(wc -l <<< "$guestdir") > 1 ]]; then
	echo "More than one guest's directory was found. No idea which one to use."
	exit 1
fi

# 2) Create the guest-session directory if it doesn't exist
if [ ! -d "/etc/guest-session/" ]; then
  mkdir /etc/guest-session
fi

# 3) Backup the current skel directory
if [ -d "/etc/guest-session/skel/" ]; then
	suffix=$(date -u +%Y-%m-%d-%H%M%S)
	mv /etc/guest-session/skel /etc/guest-session/skel-$suffix
fi

# 4) Copy the directory to the skel directory
cp -R "$guestdir/" /etc/guest-session/skel

# 5) Change ownership and permissions of the skel directory
chown -R root:root /etc/guest-session/skel
chmod -R 0777 /etc/guest-session/skel

exit 0