# Ubuntu
## OS Installation
Install the latest version of [Virtual Box ](https://www.virtualbox.org/wiki/Downloads ).
> The text instructions are more important than the screenshots
Screenshots of the installation of Ubuntu in Virtual Box are [here ](https://github.com/xpetit/vbox-ubuntu-install/blob/master/README.md ).
Download and boot the [last Ubuntu release ](http://releases.ubuntu.com/19.10/ubuntu-19.10-desktop-amd64.iso ).
Refactor & Beautify & destruction commit
return early, remove else branches, reorder conditions and top-level functions, remove empty lines, remove unnecessary append(), fix typos, stop using testing package, remove dead code, fix mistakes in subjects, tests and solutions, remove disclaimers, reformat comments, simplify solutions, tests, add more instructions to subjects, remove obsolete files, etc.
Some of the reasons behind those modifications will be added to good-practices.en.md
Some of the exercises are now broken, they will have to be fixed, most of them have a "TODO:" comment.
5 years ago
- Create a new virtual machine named "Ubuntu" with at least 4096 MB of RAM
- Use the fixed size storage allocation (to have more performance)
- In the settings of the VM
- System -> Motherboard : check "Enable EFI"
- System -> Processor : Select at least 2 processors
- Display -> Screen : Put "Video Memory" to the maximum
- Enable 3D acceleration
- Storage
- Remove IDE controller
- Add Optical Drive to the SATA controller
- Choose your Ubuntu ISO image
- Close the settings (click OK)
- Run the VM
Follow the screenshots (some settings can be personalized, such as keyboard layout, location, password, login automatically, but **do not change the username** )
Skip the welcoming window.
Don't install updates if Ubuntu asks to. The scripts will.
## OS customization
You can overwrite the files of the folder `system` by setting an environment variable named `OVERWRITE` with the format : `Destination folder;Git URL` .
For example to write the content of the repository [github.com/xpetit/custom ](https://github.com/xpetit/custom ) in the system folder :
```shell
export OVERWRITE='.;https://github.com/xpetit/custom.git'
```
## OS configuration
Run a terminal and type these commands :
```shell
unset HISTFILE
sudo apt-get -y install git
export PERSISTENT=
git clone https://github.com/01-edu/public.git
public/scripts/setup.sh
```
After reboot you should install Virtual Box additions (and reboot again) :
```shell
sudo apt -y install virtualbox-guest-x11
```
Then it is advised to use the virtual machine in full screen mode (Host key - F)
