Linux Users, Processes & Package Management

Master system administration by managing users, monitoring processes, installing software packages, and efficiently searching files and content through hands-on practice.

User Management Commands

Create, modify, and delete user accounts in Linux:

whoami

Display current logged-in user

$ whoami root
id

Show user ID, group ID, and groups

$ id uid=0(root) gid=0(root) groups=0(root)
adduser username

Create a new user account

$ sudo adduser john Adding user `john`...
passwd username

Change user password

$ passwd john Enter new password:
su - username

Switch to different user

$ su - john Password:
sudo command

Execute command as root

$ sudo apt update
userdel username

Delete user account

$ sudo userdel john

Additional Resources & References

ps Manual Page

Complete reference for process listing command

grep Manual

Detailed grep documentation and patterns

apt Manual

Complete apt package manager guide