---
title: "Update Host names"
slug: "update-host-names"
updated: 2024-10-10T09:37:46Z
published: 2024-10-10T09:37:46Z
canonical: "help.scalefusion.com/update-host-names"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.scalefusion.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Update Host names

Use this script to remotely update the Host names on Linux machines.

1. Copy and save the contents below to a **UTF-8** editor like **notepad++** OR **Sublime Text** in Windows or **gedit** in Ubuntu.
  1. If you are using **notepad++** then use the bottom right panel to change the type to **Unix (LF)**. ![](https://cdn.document360.io/175c0eac-012f-4410-bdc5-ac60794f82d8/Images/Documentation/image-3XNBVIR0.png)
2. Or click [here](https://cdn.document360.io/175c0eac-012f-4410-bdc5-ac60794f82d8/Images/Documentation/Multipe_Hostname_update.sh) to download the file.

```bash
#!/bin/bash

# Check if the script is run with root privileges
if [ "$EUID" -ne 0 ]; then
  echo "Please run as root."
  exit 1
fi

# Get the current hostname
current_hostname=$(hostname)

# Check if the current hostname is empty or not
if [ -z "$current_hostname" ]; then
  echo "Error: Unable to retrieve current hostname."
  exit 1
fi

# Define the new hostname based on the current hostname
case $current_hostname in
  "please enter the current hostname of the machine 1")
    new_hostname="please enter new hostname you want set"
    ;;
  "please enter the current hostname of the machine 2")
    new_hostname="please enter new hostname you want set"
    ;;
  # Add more cases for additional hostnames
  *)
    # If the current hostname doesn't match any known cases, no changes are made
    echo "Hostname is not in the list. No changes made."
    exit 0
    ;;
esac

# Change the hostname in /etc/hostname
echo "$new_hostname" > /etc/hostname

# Change the hostname in /etc/hosts
sed -i "s/127.0.1.1.*/127.0.1.1\t$new_hostname/" /etc/hosts

# Notify the user to reboot for the changes to take effect
echo "Hostname changed from $current_hostname to $new_hostname. Please reboot your system for the changes to take effect."
```
3. In the script, replace the following placeholder:
  1. case $current_hostname in

"please enter the current hostname of the machine 1")
  2. new_hostname="please enter new hostname you want set"
4. The device will need to be rebooted once after publishing the script.
5. Follow [our guide](/docs/deploy-linux-shell-scripts-using-scalefusion#step-1-upload-and-deploy-the-script) to upload & publish the script using Scalefusion Dashboard.

> [!CAUTION]
> Note:
> 
> 1. Some of the scripts and their contents are sourced from internet and yes, our new friend ChatGPT.
> 2. Please validate the scripts on a test machine before deploying them on all your managed devices.
> 3. Scalefusion has tested these scripts, however Scalefusion will not be responsible for any loss of data or system malfunction that may arise due to the usage of these scripts.