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Ubuntu is a free and open-source Linux distribution based on Debian. Ubuntu is officially released in three editions: Desktop, Server, and Core (for IoT devices and robots).
Releases of Ubuntu get a development codename (“Breezy Badger”) and are versioned by the year and month of delivery - for example Ubuntu 17.10 was released in October 2017. LTS or “Long Term Support” releases are published every two years in April. Every six months between LTS versions, Canonical publishes an interim release of Ubuntu. See this link for more details on the Ubuntu Release Cycle.
LTS releases are supported for 5 years, while interim releases are supported for 9 months. Packages in
restricted are supported for 5 years in long term support (LTS) releases. Ubuntu Flavors generally support their packages for 3 years in LTS releases but there are exceptions.
During the lifetime of an Ubuntu release, Canonical provides security maintenance. Basic Security Maintenance covers binary packages that reside in the
restricted components of the Ubuntu archive, typically for a period of 5 years from LTS release.
This page does not track ESM (Paid support beyond 5 years for limited set of packages) releases. Please see the Ubuntu Website for that.
More information is available on the Ubuntu website.
You should be running one of the supported release numbers listed above in the rightmost column.
You can check the version that you are currently using by running:
You can submit an improvement to this page by visiting GitHub. You will need to fork the website and submit a Pull Request.