I recently installed Ubuntu 16.04 using the instructions here.
I am a novice at the operating system and was trying to set up a VPN using the instructions from here.
But I messed up mid-way and now I have no idea how to continue or go back. I changed some system files during the process and I couldn't find a way to restore them. Neither do I know which specific ones I changed. However, it has only been 3 days since I installed the OS and I wanted to re-install it so I can get back the default files.
My question is: Will I be able to use the same partitioning system I created the first time for the swap area, root and home space? And if so, how?
Also, if you have any way I can restore the files I changed, it would be very much appreciated.