{"id":3405,"date":"2024-12-12T05:31:58","date_gmt":"2024-12-12T05:31:58","guid":{"rendered":"https:\/\/platinumsupport.in\/blog\/?p=3405"},"modified":"2024-12-12T05:45:55","modified_gmt":"2024-12-12T05:45:55","slug":"how-to-setup-hostname-on-linux","status":"publish","type":"post","link":"https:\/\/platinumsupport.in\/blog\/how-to-setup-hostname-on-linux\/","title":{"rendered":"How to Set Up a Hostname via Command Line on Linux"},"content":{"rendered":"
\n
Below are the steps for both temporary and permanent changes, suitable for various Linux distributions.<\/span><\/p>\n<\/header>\n
\n

1. Temporary Hostname Change (Resets on Reboot)<\/h2>\n

To temporarily change the hostname, use the hostname<\/code> command. Note that this change will not persist after a reboot.<\/p>\n

sudo hostname NEW_HOSTNAME<\/code><\/pre>\n
Replace NEW_HOSTNAME<\/code> with your desired hostname.<\/p>\n<\/section>\n
\n
2. Permanent Hostname Change<\/h2>\n
To make the hostname change persistent across reboots, follow these steps:<\/p>\n
a. For Modern Linux Systems Using hostnamectl<\/code><\/h3>\n
Most modern Linux distributions use systemd<\/code>. Use the following command:<\/p>\n
sudo hostnamectl set-hostname NEW_HOSTNAME<\/code><\/pre>\n
This will update the hostname permanently.<\/p>\n
b. For Older Linux Systems<\/h3>\n
    \n
  1. Edit the \/etc\/hostname<\/code> file:\n
    sudo nano \/etc\/hostname<\/code><\/pre>\n
    Replace the existing hostname with NEW_HOSTNAME<\/code> and save the file.<\/li>\n
  2. Update the \/etc\/hosts<\/code> file:\n
    sudo nano \/etc\/hosts<\/code><\/pre>\n
    Find the line starting with 127.0.0.1<\/code> and ensure it maps to the new hostname:<\/p>\n
    127.0.0.1   NEW_HOSTNAME<\/code><\/pre>\n<\/li>\n
  3. Apply the changes:\n
    sudo systemctl restart systemd-hostnamed<\/code><\/pre>\n
    Alternatively, reboot your system:<\/p>\n
    sudo reboot<\/code><\/pre>\n<\/li>\n<\/ol>\n<\/section>\n
    \n
    3. Verify the Hostname<\/h2>\n
    After making the changes, you can verify the hostname using one of the following commands:<\/p>\n
    hostname<\/code><\/pre>\n
    Or:<\/p>\n
    hostnamectl<\/code><\/pre>\n
    Both commands will display the current hostname.<\/p>\n<\/section>\n