Assignment on Linux Tools

1.   What is shell?

Answer: Shell is a program that takes commands from the keyboard and gives them to the operating system to perform

2. what is terminal ?

Answer: A computer terminal is an electronic or electromechanical hardware device that can be used for entering data into, and transcribing data from, a computer or a computing system

3.What is user friendly in between terminal and GUI & why?

Answer: GUI is more user-friendly, and CLI is more advanced and powerful.

4.   What defines a user account?

Answer: A user account is an identity created for a person in a computer or computing system. User accounts can also be created for machine entities, such as service accounts for running programs, system accounts for storing system files and processes, and root and administrator account for system administration

5.   What is root user?

Answer: The root is the user name or account that by default has access to all commands and files on a Linux or other Unix-like operating system.

6.   What is general purpose user?

Answer: A general-purpose computer is one that, given the appropriate application and required time, should be able to perform most common computing tasks. Personal computers, including desktops, notebooks, smartphones and tablets, are all examples of general-purpose computers.

7.   What are the difference between root user and general purpose user?

Answer: Root user can do any change in an operating system while 
general purpose user do not have that privilege. 

8.   What is the meaning of sudo?

Answer: Sudo stands for "superuser do".

9.   What is the meaning of su?

Answer: It means substitute user

10.  Why we use sudo?

Answer: We use sudo to get the administrator or delegate authority power to us.

11. why do we use su ?

Answer: The most common use of the su is to get superuser privileges. It is often mistaken as an abbreviation for “superuser”, but it is an abbreviation for “substitute user”. When using su, we can run it with or without the – argument

12.  How to create a user account?

Answer: From the terminal typing "sudo adduser" followed by a space and the target user's username and then typing target user's password when prompted.

13.  How to delete a user?

Answer: From the terminal typing "sudo deluser" followed by a space and the target user's username and then typing target user's password when prompted.

14 .How to login into a user account?

Answer:  From the terminal typing "sudo" followed by a space and the target user's username and then typing target user's password when prompted.

15.How to logout from a user account?

Answer: By clicking the Log Out button.

16. How many times it requires password for creating a user account?

Answer: It takes 2 times

17. How to exit from root?

Answer: By press CTRL + D

18. What is the meaning of sudo adduser {username}?

Answer: It means creating a user account

19. What is the meaning of deluser {username}?

Answer: It means deleting user account

20. What is the meaning of sudo su?

Answer: It means we can run a program being a root user.