Kali linux change hostname

How To Change Linux Hostname In Ubuntu, Debian, Mint, Kali, CentOS, RedHat?

Hostname is used to name the systems. Normally the computer networks work with IP addresses in order to identify and communicate. But hostname provides human friendly way to name, identify, communicate with other systems.

Example Hostname

Hostname is just a meaningful word for the system administrators to name a system. For example we can use db1 for first database server or app3 for the third application server.

Default Hostname

Hostnames generally set during the system installation. But may change after the installation. Different Linux distributions uses different default hostnames during installation. Here are some of them.

Debian

Ubuntu:

Fedora:

CentOS:

Print Hostname with hostname Command

There are different ways to print default hostname of the system. hostname command is the most known and popular way in order to print hostname of the current system. This command will work on all Linux distributions like Debian, Ubuntu, Mint, Kali, CentOS, RedHat, Fedora etc.

Print Hostname with hostname Command

As we can see the hostname of the given system is poftut1

Print Hostname with hostnamectl Command

There is a new command which is supported by all popular Linux distributions like Debian, Ubuntu, Mint, Kali CentOS, RedHat, Fedora. We can use hostnamectl command which will provide the hostname of the current system and more like Chassis , Operating System etc.

Print Hostname with hostnamectl Command

Change Hostname For Ubuntu, Debian, Mint, Kali

Now we will start to learn how to change hostname of the deb based Linux distributions like Ubuntu, Debian, Mint, Kali. These distributions stored hostname settings in /etc/hostname file. So changing this file will change hostname but this will require a reboot to make changes affect.

In this example we will change hostname to the POF1 . We will also use sudo because hostname change operation requires root privileges.

Change Hostname For CentOS, RedHat

Hostname configuration of rpm based disributions like CentOs, RedHat, Fedora are stored in /etc/sysconfig/network . HOSTNAME line provides the hostname of the current system. Example configuration file is like below.

Just put the hostname you want to set to the poftut . But there is also domain name part which is domainname.com . We can set as default or change according to our settings. But if we do not need we can set whatever we want.

In order to make change affect we need to restart network services with the following command.

Change Hostname with sysctl Command For Ubuntu, Debian, Mint, Kali, CentOS, RedHat

sysctl is a command use to configuration low level settings of a Linux system and kernel. We can use it to set hostname. In this example we will set as poftut1 .

Change Hostname with hostnamectl Command For Ubuntu, Debian, Mint, Kali, CentOS, RedHat

We can also use hostnamectl command in order to change current hostname configuration. In this case we will use set-hostname parameter. In this example we will set the hostname as poftut1

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How To Find and Change Ubuntu, Debian, Kali Mint Hostname?

Hostname is used to identify the Linux hosts. We generally prefer to put related host names to the systems like web1, db5 etc. In this tutorial we will look how to find and print hostname and change it with different methods. Following examples can be used for other Linux distributions like CentOS, Fedora, RedHat too.

Find Current Hostname

There are different ways to find hostname. But the most easy and stable way is printing related host name configuration. Host name configuration is stored in /etc/hostname which is very easy to find. We will print this configuration file like below.

Find Current Hostname

Find Current Hostname with hostnamectl Command

hostnamectl is a new tool in order to manage host name configuration. We can print current hostname just providing hostnamectl command like below. As we can more information can be found in the output like Operating system, machine UID etc.

Find Current Hostname with hostnamectl

Change Hostname Temporary

There is command named hostname which is used to change hostname temporarily. We can provide the name we want to set. But we should have root privileges for host name change.

Change Hostname Temporary

Change Host name Permanently

We can change hostname permanatly too. Previous example will change hostname for current power up. After a reboot the host name will be reverted back. We will edit the hostname configuration file /etc/hostname and put whatever we want.

Change Host name with hostnamectl

hostnamectl command provides different options to list and set host name and related information. We will use set-hostname option in order to change host name. We will set host name poftut4 like below.

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Hacks Tweaks & Tutorials

its all about information security

How to change hostname in Kali linux

By default, my hostname (computer name) is kali as you see in the picture.

1. Open a Terminal (Ctrl+Alt+t) and enter the command “hostname” (without the quotes). This command shows the hostname of our machine.

2. For changing the host name, we use the same command “hostname” followed by your new desired hostname

hostname new_host_name

To view the change in hostname, open a new terminal

The above command is only applied on specific session, so when you start the hostname service or restart your computer, the hostname will return to the old one (kali).

3. So, in order to make the hostname change permanent, we should edit the file named located in /etc/hostname (this is where the hostnames are stored).

Use the editor command pico to edit that file. You can use any other editor command as you prefer.

The file opens in the editor for editing.

Delete the entry “kali” (in my machine) and enter your desired hostname.

Press Ctrl+O and hit enter to save and press Ctrl+X to exit.

4. To check whether your hostname have changed or not, you can use the command “service hostname start” which restarts the service “hostname” or simply reboot your kali machine.

5. Now you have your new desired hostname permanent.

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How to Change hostname in Linux?

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One of the essential tasks for a system administrator is to know how to change the hostname.

If you have entered the wrong hostname during installation or requirement to change it, you can change it as below. The following is tested on Ubuntu and CentOS.

Changing hostname involves three steps.

• Change HOSTNAME value in /etc/sysconfig/network
• Change hostname in /etc/hosts
• Updating hostname on the terminal

1. Display Hostname

Let’s find out the configured name by executing hostname on the terminal.

Let’s change to geekflare

2. Change Hostname

Edit /etc/sysconfig/network file using vi , look for HOSTNAME= and update that to the desired name.

Note: I’ve noticed on some Cloud VM that HOSTNAME entry doesn’t exist. If you don’t find this on your server then you may ignore this step.

Before change:

After change:

The next step would change the hostname in a hosts file.

Edit /etc/hosts file, look for current hostname in 127.0.0.1 and server IPs (if any) line and update that to the desired one which you configured above.

Before change:

After change:

3. Change hostname on terminal

And, finally, execute the hostname command with the desired value.

Try to re-login to your server and you’ll notice the new hostname.

Using DigitalOcean Server?

If you would like to change the hostname on the DigitalOcean VM, then you also have to update the hostname in /etc/hostname file.

Here is a quick video demonstration.

Isn’t it? Interested in learning more about Linux? Check out this administration course.

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How to Change Kali Linux Hostname Using terminal

Kali Linux is becoming popular and more and more users are using it to try out different things. When installing kali, you get to choose a hostname, but in case you accepted the default hostname (kali) and later want to change it, here’s a How-to guide to change hostname in Kali Linux.

Now just changing hostname to something else might not be enough. How about we change hostname every time you boot your computer to a random one? That could be fun. It also helps to avoid suspicion from System Admins in your network to see “kali” in their network. Like BackTrack, SysAdmins doesn’t like Kali much (I mean why would they? Kali is designed to poke and prod around the network to find vulnerability). Even if you’re using Kali as your primary OS, it just raises eyebrows and you might get a visit from an over-conscious SysAdmin. So we will discuss all possible ways, change the hostname to something else permanently and change hostname randomly in each boot.

By default, my hostname (computer name) is kali as you see in the picture.

Steps :

1. Open a Terminal (Ctrl+Alt+t) and enter the command “hostname” (without the quotes). This command shows the hostname of our machine.

2. For changing the hostname, we use the same command “hostname” followed by your new desired hostname

command usage :

hostname new_host_name

To view the change in a hostname, open a new terminal

The above command is only applied to the specific session, so when you start the hostname service or restart your computer, the hostname will return to the old one (kali).

3. So, in order to make the hostname change permanent, we should edit the file named located in /etc/hostname (this is where the hostnames are stored).

Use the editor command pico to edit that file. You can use any other editor command as you prefer.

The file opens in the editor for editing.

Delete the entry “kali” (in my machine) and enter your desired hostname.

Press Ctrl+O and hit enter to save and press Ctrl+X to exit.

4. To check whether your hostname has changed or not, you can use the command “service hostname start” which restarts the service “hostname” or simply reboot your kali machine.

5. Now you have your new desired hostname permanent.

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