I will start from the beginning.
I was a noob and ran a really bad command in Ubuntu and now I can't do anything with sudo.
sudo chmod 644 /
I was instructed to boot from a liveCD or liveUSB. I chose USB because I still have the one from when I installed it.
I was told to run this from within the booted liveUSB:
sudo chmod 755 /
And it should be fixed. Well it's not. My best guess is because I am changing the permissions on the root directory of the USB and not the root directory of my laptop.
What am I missing here? How can I fix this?