How to upgrade Ubuntu 16.04 to 18.04 LTS using terminal


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Originally published at: https://www.cyberciti.biz/faq/how-to-upgrade-ubuntu-16-04-to-18-04-lts-using-terminal/

I am using Ubuntu Linux 16.04 LTS on Lionde. How do I upgrade Ubuntu 16.04 to 18.04 LTS using terminal bash shell over ssh based session?