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1.5 KiB

Ubuntu

OS Installation

Download and boot the latest Ubuntu release.

Follow the steps with these customizations:

img1 img2 img3

The partitioning is:

  1. 256 MB : EFI partition
  2. 20 GB : system partition

img4 img5

Remove the installation disk and then reboot.

Skip the welcoming window.

Don't install updates if Ubuntu asks to. The scripts will.

Admin access

You can add your public SSH key to access the administrator account later:

unset HISTFILE
sudo mkdir /root/.ssh
wget github.com/xpetit.keys
cat xpetit.keys | sudo tee /root/.ssh/authorized_keys
sudo chmod 400 !$
rm xpetit.keys

OS configuration

Run a terminal and type these commands:

unset HISTFILE
sudo apt -y install git
git clone https://github.com/01-edu/public.git
public/sh/debian/ubuntu/setup.sh

The script will ask for student user password (which will be deleted after) and then after a long configuration process it will restart the computer.

The system is now read-only, every data is written to a temporary partition.

The session is password-less.

To gain a superuser terminal, use SSH:

user@remote:~$ ssh -p512 root@IP_ADDRESS

To gain access with read/write access to the filesystem, use this command:

root@ubuntu:~# overlayroot-chroot
INFO: Chrooting into [/media/root-ro]
root@ubuntu:/#