Note:- This only works for ubuntu version (20.04, 22.04, 24.04), oracle, debian, kali linux.
Initialize systemd to set the hostname at boot time.
Here’s how you can do it:
1. Create a systemd Service Unit
Open a terminal and create a new systemd service unit file for setting the hostname:
sudo nano /etc/systemd/system/sethostname.service
2. Add the following lines to the file:
[Unit]
Description=Set Hostname
[Service]
Type=oneshot
ExecStart=/bin/hostnamectl set-hostname your-new-hostname
[Install]
WantedBy=multi-user.target
Replace `your-new-hostname` with your desired hostname.
Save the file and exit the editor.
3. System has not been booted with systemd as init system.
Enable systemd via /etc/wsl.conf
cat /etc/wsl.conf
4. Copy below code & paste it in wsl.conf file.
[boot]
systemd=true
[user]
default=username
5. Reload systemd and Enable the Service:
Reload systemd to recognize the new service unit file and enable the service:
sudo systemctl daemon-reload
sudo systemctl enable sethostname.service
6. Restart Your System:
Finally, restart your system to apply the changes:
sudo reboot
After rebooting, the systemd service should set the hostname during the boot process, ensuring that it persists across reboots.
