When creating a new user, the default behavior of the useradd command is to create a group with the same name as the username, and same GID as UID. The primary purpose of groups is to define a set of privileges such as reading, writing, or executing permission for a given resource that can be shared among the users within the group. Linux groups are organization units that are used to organize and administer user accounts in Linux. You can verify the user’s UID, using the id For example to create a new user named username with UID of 1500 you would type: sudo useradd -u 1500 username Invoke useradd with the -u ( -uid) option to create a user with a specific UID. The UID and other access control policies are used to determine the types of actions a user can perform on system resources.īy default, when a new user is created, the system assigns the next available UID from the range of user IDs specified in the fs file. User identifier (UID) is a unique positive integer assigned by the Linux system to each user. In Linux and Unix-like operating systems, users are identified by unique UID and username. Here is an example showing how to create a new user named username with a home directory of /opt/username: sudo useradd -m -d /opt/username username Creating a User with Specific User ID # If you want to create the user’s home directory in other location, use the d ( -home) option. Creating a User with Specific Home Directory #īy default useradd creates the user’s home directory in /home. Within the home directory, the user can write, edit and delete files and directories. ![]() In the /home/username directory, you will see the initialization files: ls -la /home/username/ drwxr-xr-x 2 username username 4096 Dec 11 11:23. The command above creates the new user’s home directory and copies files from /etc/skel directory to the user’s home directory. Use the -m ( -create-home) option to create the user home directory as /home/username: sudo useradd -m username On most Linux distributions, when creating a new user account with useradd, the user’s home directory is not created. How to Add a New User and Create Home Directory # Passwd: all authentication tokens updated successfully. ![]() You will be prompted to enter and confirm the password. To do that run the passwdĬommand followed by the username: sudo passwd username To be able to log in as the newly created user, you need to set the user password. The command adds an entry to the /etc/passwd, /etc/shadow, /etc/group and /etc/gshadow files. When executed without any option, useradd creates a new user account using the default settings specified in the /etc/default/useradd file.
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