Change Hostname

Changing the hostname in FreeBSD can be done in a few simple steps. Here’s how to do it: 
 Step 1: Change the Hostname Temporarily 
 To change the hostname temporarily (until the next reboot), you can use the hostname command. Open a terminal and run: 
 sudo hostname new-hostname
 
 Replace new-hostname with your desired hostname. 
 Step 2: Change the Hostname Permanently 
 To make the hostname change permanent, you need to edit the /etc/rc.conf file. Open the file in a text editor, such as vi or nano : 
 sudo vi /etc/rc.conf
 
 or 
 sudo nano /etc/rc.conf
 
 Look for a line that starts with hostname=. If it exists, change it to your new hostname. If it doesn’t exist, add the following line: 
 hostname="new-hostname"
 
 Again, replace new-hostname with your desired hostname. 
 Step 3: Update the /etc/hosts File 
 It’s also a good idea to update the /etc/hosts file to reflect the new hostname. Open the file: 
 sudo vi /etc/hosts
 
 or 
 sudo nano /etc/hosts
 
 Find the line that contains the old hostname and change it to the new hostname. It might look something like this: 
 127.0.0.1 localhost
127.0.0.1 old-hostname
 
 Change old-hostname to new-hostname: 
 127.0.0.1 localhost
127.0.0.1 new-hostname
 
 Step 4: Reboot or Restart Networking 
 To apply the changes, you can either reboot the system: 
 sudo reboot
 
 Or, you can restart the networking service: 
 sudo service netif restart
 
 Step 5: Verify the Change 
 After rebooting or restarting the network, you can verify that the hostname has been changed by running: 
 hostname
 
 This should display your new hostname. 
 By following these steps, you should be able to successfully change the hostname on your FreeBSD system.