How to Change Hostname in Linux

Method 1: Command Line

Step 1: Edit in /etc/sysconfig/network File

In order to change the hostname edit the following file:

# sudo nano /etc/sysconfig/network

Step 2: Modify /etc/hosts File

Edit /etc/hosts File and enter the hostname along with IP Address of server for local use.

# vi /etc/hosts localhost.localdomain localhost

Step 3: Modify the Hostname

# hostname
# hostname

Step 4: Restart Network

Now restart the network:

/etc/init.d/network restart

Method 2: GUI Environment

Step 1: Execute setup Command

# setup

Select Network Configuration Tab

Step 2: Select DNS Configuration


Step 3: Modify the Hostname

Once the changes have made, Select SAVE & QUIT and press ENTER key from keyboard.