nixCraft Linux / UNIX Newsletter

Ubuntu upgrade or update a single package using apt-get

Posted: 24 Oct 2018 03:35 AM PDT

I am a new Ubuntu Linux server system administrator. I need to upgrade or update a single package using apt-get command or apt command. How do I update a specific package in Ubuntu Linux? How do I upgrade a single package using apt-get?

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Ubuntu 18.04 Setup SSH Public Key Authentication

Posted: 23 Oct 2018 11:44 PM PDT

I am a new Ubuntu 18.04 LTS user and I would like to setup ssh public key authentication. How do I set up ssh keys based authentication on Ubuntu Linux 18.04 LTS server? How do I set up SSH keys on an Ubuntu Linux 18.04 LTS server? In Ubuntu 18.04 LTS, how do I set up public key authentication?

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Ubuntu 18.04 LTS change hostname permanently

Posted: 23 Oct 2018 09:58 PM PDT

I am a new Ubuntu Linux 18.04 LTS cloud server user. By default my serer name to 'localhost' during installation but now I would like to change the computer name to 'u1804-nixcraft'. Can you tell me how do I I remove localhost and set it to u1804-nixcraft on Ubuntu 18.04 Linux? How do I change the Ubuntu computer name from 'localhost' to 'u1804-nixcraft'? Can you tell me more about Ubuntu Linux change hostname command?

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