Make sure you are logged in as root and move to /etc/sysconfig and open the network file in vi. Look for the HOSTNAME line and replace it with the new hostname you want to use. In this example I want to replace localhost with redhat9. When you are done, save your changes and exit vi.
How do I change the hostname in Linux?
Ubuntu change hostname command
- 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?
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.
How do I change the hostname in CentOS 6?
Change hostname in CentOS
- Open the /etc/sysconfig/network file with your favorite text editor i.e. vi, nano. Modify the HOSTNAME= value to match your FQDN host name. …
- Change the host file. Change the host that is associated to your main IPaddress for your server, file path is /etc/hosts. …
- Run Hostname. …
- Restart networking.
How do I change the hostname on Linux 7?
How to change hostname in CentOS/RHEL 7
- use hostname control utility: hostnamectl.
- use NetworkManager command line tool: nmcli.
- use NetworkManager text user interface tool : nmtui.
- edit /etc/hostname file directly (a reboot afterwards is required)
How do I find my hostname in Linux?
The procedure to find the computer name on Linux:
- Open a command-line terminal app (select Applications > Accessories > Terminal), and then type:
- hostname. hostnamectl. cat /proc/sys/kernel/hostname.
- Press [Enter] key.
How do I change hostname in Hostnamectl?
The procedure to change the computer name on Ubuntu 18.04 LTS:
- Type the hostnamectl command : sudo hostnamectl set-hostname newNameHere. 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 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.
How do I change the hostname in Redhat 6?
Another simple way is to echo the new name into the /proc/sys/kernel/hostname file. NOTE: Using the /etc/sysconfig/network file is the preferred method to make permanent changes. Anything in the /proc/sys/kernel/hostname file will be overridden by the /etc/sysconfig/network file during a reboot.
What is a hostname example?
On the Internet, a hostname is a domain name assigned to a host computer. For example, if Computer Hope had two computers on its network named “bart” and “homer,” the domain name “bart.computerhope.com” is connecting to the “bart” computer.
What is transient hostname?
The Transient hostname represents the name that is set for the system by services such as DHCP or mDNS after a system boot. If the Transient hostname is not set, the system uses the Static hostname .