Users Management in Linux - Types, Create, Delete, Modify
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A user is a security principle, user accounts are used to provide people or processes access to the system resources
Processes are using system accounts
People are using regular user accounts
Properties:
Name: the name of the account
Password: the secret that is used for authentication, may be disabled
UID: a unique identifier for users
GID: the ID of the primary group
GECOS: additional non-mandatory information about the user
Home directory: the environment where users create personal files
Shell: the program that will be started after successful authentication
To create a new standard user, use the useradd command. The syntax is as follows:
useradd name
The useradd command utilizes a variety of variables,
Useradd: create user accounts
Usermod: modify user accounts
Userdel: delete user accounts
Passwd: set passwords
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