How to Change Hostname (Computer Name) on Ubuntu

The procedure to change the computer name on Ubuntu Linux:

Type the following command to edit /etc/hostname using nano or vi text editor: sudo nano /etc/hostname. Delete the old name and setup new name.
Next Edit the /etc/hosts file: sudo nano /etc/hosts. ...
Reboot the system to changes take effect: sudo reboot.

How do I change my hostname?
Where is the hostname stored in Ubuntu?
How do I change the hostname in Ubuntu 18.04 GUI?
How do I change the hostname in Linux command line?
How can I change my hostname without rebooting?
What is a hostname example?
Where is hostname saved?
How do I change my IP address in Ubuntu?
How do I change the root name in terminal?
What is host name in Linux?
How do I change the hostname in Windows 10?
How do I change the root username in Ubuntu?

How do I change my hostname?

Change a server's hostname

Using a text editor, open the server's /etc/sysconfig/network file. ...
Modify the HOSTNAME= value to match your FQDN hostname, as shown in the following example: HOSTNAME=myserver.domain.com.
Open the file at /etc/hosts. ...
Run the hostname command.

Where is the hostname stored in Ubuntu?

The static hostname is stored in /etc/hostname , and the pretty hostname is stored in /etc/machine-info file. You shouldn't use the same hostname on two different machines on the same network. On most systems, the hostname is mapped to 127.0. 0.1 in /etc/hosts .

How do I change the hostname in Ubuntu 18.04 GUI?

Change hostname in Ubuntu Using GUI

To change the hostname in Ubuntu 18.04 or any other Linux distribution using GNOME desktop, just go to the System Settings and click on Details. In here, you'll see the 'Device name' field that is editable. This 'Device name' is your system's hostname. Change it to whatever you want.

How do I change the hostname in Linux command line?

Changing the Hostname

To change the hostname invoke the hostnamectl command with the set-hostname argument followed by the new hostname. Only the root or a user with sudo privileges can change the system hostname. The hostnamectl command does not produce output.

How can I change my hostname without rebooting?

To do this issue the command sudo hostnamectl set-hostname NAME (where NAME is the name of the hostname to be used). Now, if you log out and log back in, you'll see the hostname has changed. That's it--you've changed the hostname without having to reboot the server.

What is a hostname example?

In the Internet, a hostname is a domain name assigned to a host computer. ... For example, en.wikipedia.org consists of a local hostname (en) and the domain name wikipedia.org. This kind of hostname is translated into an IP address via the local hosts file, or the Domain Name System (DNS) resolver.

Where is hostname saved?

The static hostname is the most important one, and it's stored in the /etc/hostname file. This hostname is used among machines to identify a particular server. The pretty hostname got its name because it allows for more characters and punctuation.

How do I change my IP address in Ubuntu?

Configuring Static IP address on Ubuntu Desktop

In the Activities screen, search for “network” and click on the Network icon. This will open the GNOME Network configuration settings. Click on the cog icon. In “IPV4” Method" section, select “Manual” and enter your static IP address, Netmask and Gateway.

How do I change the root name in terminal?

Start a new terminal to see the new hostname. For Ubuntu server without a GUI, run sudo vi /etc/hostname and sudo vi /etc/hosts and edit them one by one. In both files, change the name to what you want and save them. Finally, restart your computer to apply the changes.

What is host name in Linux?

hostname command in Linux is used to obtain the DNS(Domain Name System) name and set the system's hostname or NIS(Network Information System) domain name. A hostname is a name which is given to a computer and it attached to the network. Its main purpose is to uniquely identify over a network.

How do I change the hostname in Windows 10?

Here's the easy way to change your computer's name:

Open Settings and go to System > About. ...
In the About menu, you should see the name of your computer next to PC name and a button that says Rename PC. ...
Type the new name for your computer. ...
A window will pop up asking if you want to restart your computer now or later.

How do I change the root username in Ubuntu?

Change the Username and Hostname on Ubuntu

Change the username. At the start screen press Ctrl+Alt+F1 . Log in using your username and password. ...
Change the hostname, which is the computer name. Type the following command to edit /etc/hostname using nano or vi text editor: sudo nano /etc/hostname. Delete the old name and setup new name. ...
Change the password. passwd.