Linux Basic Commands
Completion requirements
Linux provides a set of powerful and commonly used commands to interact with the system efficiently. The
Linux provides a set of powerful and commonly used commands to interact with the system efficiently. The cd command is used to change directories, while ls lists the contents of a directory. To clear the terminal screen, the clear command is used. The mkdir command helps create new folders, and pwd shows the current working directory. The rm command is used to remove files or directories, and touch is used to create empty files. To edit or view text files directly in the terminal, vi is a powerful editor. The / symbol represents the root directory, which is the top level of the Linux filesystem. To manage users, adduser is used to create a new user, and userdel is used to delete an existing one. The history command displays a list of previously executed commands, allowing users to track or reuse them easily. These commands form the foundation for working effectively in a Linux environment.
8. userdel
userdel Command in Linux
The userdel command is used to delete a user account from the system.
⚠️ Requires root privileges, so use it with sudo.
🔹 Basic Syntax:
userdel [username]🔹 Example:
userdel ashwin👉 This command deletes the user account named ashwin.
🔸 Note: By default, this does not delete the user's home directory.
🔹 Delete user and their home directory:
userdel -r ashwin👉 This removes:
-
The user account
ashwin -
Their home folder:
/home/ashwin -
Their mail spool and personal files
🔹 How to confirm user is deleted:
cat /etc/passwd | grep ashwin👉 If no output, the user is deleted.
🔹 Warning:
Don’t delete users while they are logged in.
It can cause system issues. First, check:
whoTry with Linux Practice