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As you know, any Raspberry Pi installation starts with a default username (pi) and the same password each time (raspberry).
In my other tutorials, I always recommend changing the password first.
Today, I’ll also address the way to change the default username.

The Linux command usermod can be used to change the default Raspberry Pi username (pi). This command is used to change all the parameters for a Linux account, including its name. But there are a few prerequisites to do this safely and efficiently.

In this article I’ll show you three methods to change the “pi” user with something more pertinent. The first one is by using the usermod command, the second one is by changing a bunch of files manually, and the last one is by simply creating a new user.

Además de cambiar la contraseña, que como decimos es una medida de seguridad básica e imprescindible, también es más que recomendable cambiar el usuario por defecto. Esto hace que tu Raspberry Pi sea más segura, ya que saber el nombre del usuario es aproximadamente la mitad del trabajo de los “chicos malos”, y cuanto más difícil lo tengan mejor que mejor.

Whatever your reason is, you may need to create a new user on Raspberry Pi
The procedure is not really intuitive for a beginner, so I will explain it in this tutorial
How to create a new user on Raspberry Pi?
To create a new user, you need to use the adduser command to define the new username and password
Then, you can add it extra permissions by adding it to a group or even allow it the sudo privilege
In this post, I will start with the reasons why you’ll probably need to create a new user, then the step-by-step procedure, and finally I’ll give you a few extra tips about users management