Debian – Change hostname, domain or FQDN permanently

Change hostname, domain or FQDN permanently

Change hostname, domain or FQDN permanentlyChange hostname, domain or FQDN permanently. Setting the hostname with the hostname command will reset after a reboot. To make it permanent.
To check the hostname, just do:


root@mail:~# hostname

Domain Name
root@mail:~# hostname -d

FQDN (Fully Qualified Domain Name)
root@mail:~# hostname -f

Open the /etc/hostname to change the hostname.
Open the /etc/hosts to change the Domain name and FQDN. localhost mail

Change the Domain and FQDN in the second line in the hosts file.
Apply with /etc/init.d/ start

If you are looking for how to change the hostname on Debian 9, click this link.

If you want a see a video on how this is done. Have a look at this video!

Thats all on Change hostname, domain or FQDN permanently

Happy renaming!

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