How to find OS version in Ubuntu Linux - nixCraft
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Ubuntu 16.04.6 LTS (Xenial Xerus)
How to find OS version in Ubuntu Linux - nixCraft Nov 16, 2018 Home - Ubuntu Wiki
Ubuntu 16.04.6 LTS (Xenial Xerus)
Releases - Ubuntu Wiki 46 rows How to Check Which Version of Ubuntu You Have Installed May 07, 2018