How to change Linux hostname permanently

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I have changed my Linux server’s hostname using hostname command as follow:

hostname my-newhostname.com

But the problem is, whenever I reboot my server, it is reverting to old hostname again. How can I set permanent hostname?

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hostname command will not change your server’s hostname permanently. If you have latest Linux operating system (systemD based OS), you can do it using hostnamectl command. For complete details, you can refer our following blog post:

How to set or change Hostname in Linux

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