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# Ubuntu
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## OS Installation
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Download and boot the [last Ubuntu release](http://releases.ubuntu.com/19.04/ubuntu-19.04-desktop-amd64.iso).
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Follow the steps :
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The partitioning is :
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1. 256 MB : EFI partition
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2. 20 GB : system partition
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Remove the installation disk and then reboot.
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Skip the welcoming window.
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Don't install updates if Ubuntu asks to. The scripts will.
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## OS configuration
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Run a terminal and type :
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```console
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student@ubuntu:~$ unset HISTFILE
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student@ubuntu:~$ sudo apt-get -y install curl
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student@ubuntu:~$ bash <(curl -sSL raw.githubusercontent.com/01-edu/public/master/scripts/kickstart.sh)
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[...]
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Ask for student user password (will be removed later)
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[...]
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Long installation/configuration process then reboots
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```
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The system is now read-only, every data is written to a temporary partition.
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The session is password-less.
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To gain a superuser terminal, use SSH :
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```console
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user@remote:~$ ssh -p521 root@IP_ADDRESS
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```
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To gain access with read/write access to the filesystem, use this command :
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```console
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root@ubuntu:~# overlayroot-chroot
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INFO: Chrooting into [/media/root-ro]
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root@ubuntu:/#
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```
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