Learn Linux Shell Scripting - Fundamentals of Bash 4.4

useradd

Description	Create a new user or update default new user information.
Syntax	useradd [options] LOGIN
Practical uses	useradd -m: Create the user's home directory if it does not exist. useradd -s <shell>: The name of the user's login shell. useradd -u <uid>: The numerical value of the user's ID. useradd -g <group>: The group name or number of the user's initial login group.