Ubuntu 18.04 LTS change hostname permanently

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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?

RHEL 8 Change Hostname (computer name) command

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I am a new RHEL 8 user and setup a server. They setup my server name to ‘localhost’ during deployment but now I would like to change the computer name to something else. How can I remove old name and set it to ‘nixcraft-rhel8’ on Red Hat Enterprise Linux? Can you tell me how do I change the RHEL 8 computer name? How do I assign a static hostname to server running RHEL 8?

Ubuntu set hostname permanently (computer name) command

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I am a new Ubuntu Linux server user. My server is running on AWS cloud. By default they set my VM name to ‘ip-172-26-12-173’ during creation of VM but now I would like to change the computer name to ‘wsl-us-west2-www1’. How do I set hostname permanently on Ubuntu Linux 18.04 LTS? Can you tell me more about Ubuntu command to set hostname permanently?

Suse Linux Change Hostname (computer name) without yast

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I am a new Suse Enterprise Linux user. I setup my computer name to ‘linux-mig6’ during installation but now I would like to change the computer name to something else. How can I remove old name and set it to ‘suse-linux-server’ on SLES version 12 SP 3? Can you tell me how do I change the Suse computer name? How do I assign a static hostname to server running SuSe Linux?

OpenSUSE Linux Change Hostname (computer name) command

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I am a new OpenSUSE Linux user and setup a server at Linode cloud. They setup my server name to ‘localhost’ during deplyoment but now I would like to change the computer name to something else. How can I remove old name and set it to ‘ln-sg-vpn1’ on OpenSUSE Linux? Can you tell me how do I change the OpenSUSE Linux computer name? How do I assign a static hostname to server running openSUSE Leap 15.0?

Ubuntu Linux Change Hostname (computer name)

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I am a new Ubuntu Linux laptop user. I setup my computer name to ‘tom’ during installation but now I would like to change the computer name to ‘jerry’. Can you tell me how do I I remove tom and set it to jerry on Ubuntu Linux? How do I change the Ubuntu computer name from ‘ubuntu’ to ‘AvlinStar’? Can you tell me more about Ubuntu Linux change hostname command?