Manage User Accounts and Privileges in Ubuntu

1. List all users in Ubuntu

cut -d: -f1 /etc/passwd

Explanation:

cut : command-line utility that extracts sections from lines of a file or input

-d: : delimiter as a colon (:) to separate fields

-f1 : tells cut to extract field 1, which is username

/etc/passwd : contains all user account information

2. Create new user account

sudo adduser auser

3. Create a user with sudo privileges

sudo adduser puser

sudo usermod -aG sudo puser