Ubuntu

Ubuntu is a Linux distribution based on Debian GNU/Linux. There are Live CD versions which allow later installation and versions meant only for installations.

## Getting Ubuntu

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Download an ISO file from https://ubuntu.com/download and burn to CD or install to USB key with unetbootin, if you plan to install it on a server there are two installer versions Ubuntu Server and Ubuntu Server Live [1].

## Installation help

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* Step by Step installation of Ubuntu.
* [1] Community Documentation
* [2] playing proprietary formats
* Automatic Updates https://help.ubuntu.com/lts/serverguide/automatic-updates.html

## Mayor changes/ Versions

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Ubuntu 18.04 LTS (BionicBeaver):

* chrony replace ntpd as the recommended server for the NTP protocol.[2]
* Some application delivered by default as snaps[3]`snap search canonical`, such as Docker, Kubernetes, microk8s, aws-kernel or azure-kernel

Ubuntu 16.04 LTS:

* netplan[4] for network configuration
* Ceph and ZFS filesystems supported
* Snap packages

You can also visit wikipedia:Ubuntu_version_history or https://wiki.ubuntu.com/Releases for a detailed list of versions and changes

## Official Support

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Canonical provides official support for Ubuntu

## External links

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* Questions for Ubuntu

## Activities

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1. Install applications using snaps
2. Check your Ubuntu version: `lsb_release -a`
3. Learn about Ubuntu releases cycle policies: https://ubuntu.com/about/release-cycle
4. Read # Learn about Ubuntu releases cycle policies: Linux_server_administration/apt/Automatic_updates

Configuration

1. Change your default editor; `sudo update-alternatives --config editor`[5]

Maintenance

1. Update your Ubuntu version: `sudo apt update && apt upgrade -y`

## See also

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* Linux distributions: RHEL, Ubuntu Variants
* Outdated: Ubuntu 6.06 LTS Installation

## References

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1. ↑ https://serverfault.com/questions/930163/what-is-the-difference-between-ubuntu-server-and-ubuntu-server-live
2. ↑ https://wiki.ubuntu.com/BionicBeaver/ReleaseNotes
3. ↑ https://wiki.ubuntu.com/BionicBeaver/ReleaseAnnouncement
4. ↑ https://wiki.ubuntu.com/BionicBeaver/ReleaseNotes#Network_configuration
5. ↑ https://askubuntu.com/questions/615178/getting-the-default-text-editor-used-in-system