GNU/Linux Modifying Users


Parameters

ParameterDetails
usernameThe name of the user. Do not use capital letters, do not use dots, do not end it in dash, it must not include colons, no special characters. Cannot start with a number.

Remarks

  • You cannot remove a logged in user
  • To modify any user but your own, you need root privileges

Setting your own password

passwd

Setting another user's password

Run the following as root:

passwd username

Adding a user

Run the following as root:

useradd username

Removing a user

Run the following as root:

userdel username

Removing a user and its home folder

Run the following as root:

userdel -r username

Listing groups the current user is in

groups

More detailed information about user and group numerical IDs can be found with the id command.

Listing groups a user is in

groups username

More detailed information about user and group numerical IDs can be found with id username.