How to properly create a user with a password in Linux?

Question

linux

Manjaro distribution (kernel 5.9)

I want to create a user using useradd and the -p flag to specify a password when creating.
sudo useradd -p "12345" newuser
Switch to this user and enter this password
su newuser
su: Authentication
failed But it's not correct. What is the problem? Maybe I misunderstand how the useradd utility works?

Answer 1

You should carefully read the description of this flag. The password hash is passed as a parameter, not plain text.
So you first need to get the hash from 12345 , and then pass it to -p

Answer 2

sudo passwd user

Answer 3

man useradd