Linux change hostname

sudo nano /etc/hostname
sudo nano /etc/hosts
sudo reboot

Linux change username

# login as root and make sure that there are no active processes for user
usermod -l NEW_USERNAME OLD_USERNAME
# if user is running kill user w the following command
userUID=$(id -u OLD_USERNAME) && pkill -U $userUID

How to change hostname in kali linux

FIRST GIVE ROOT PERMISSION
	sudo su

gedit /etc/hosts
gedit /etc/hostname

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