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Kali Linux – Command Line Essentials
  • Last Updated : 30 Jun, 2020

Command-line plays a vital role while working with Kali Linux as most of its tools don’t have a Graphical User Interface and if you are performing ethical hacking or penetration testing then most of the time you will have to work with command Line Interface itself. While executing a command in Kali Linux we enter a command on the terminal emulator and it gives us the appropriate output after the execution of the command.

There are some commands in Kali Linux which we use too frequently. So we should be aware of those commands as it could increase our productivity.

Command Line Essentials

1. To display present working directory



This command will display the current directory you are in.

2. To list the directories and files in the current directory.



This command will display the list of files and directories in the current directory.

3. To change the current working directory



This command will change the directory you are currently working on.

4. To find a word in a file.

grep keyword filename


This command will list all the lines containing the keyword in them.

5. To create a new directory

mkdir directory_name


This command will create a new directory in the current folder with the name directory_name.

6. To remove a directory

rmdir directory_name


This command will remove the directory with the name directory_name from the current directory.

7. To mv a file

mv source destination


This command is used to move a file from one location to another.

8. To copy a file

cp source destination


This command will copy the file from the source to the destination.

9. To create a new file

touch filename


This command will create a new file with the name “filename

10. To display manual of a command

man ls


This command will display a manual or a user guide for the command.

11. To check the internet connection or to check whether the host is active or not.



This command will send some packets to the mentioned host and will give us output about the details of what is the status of the packet. This command could be used to check the internet connection.

12. To display network interface details.



This command is used to display the details of the network interfaces connected to the system.

13. To download a file

wget link_to_file


This command will download the file from the link entered in the command.

14. To install a package

sudo apt install package_name


This command is used to install the mentioned package in the system.

15. To remove a package

sudo apt remove package_namme


This command will remove the mentioned package from the system.

16. To upgrade packages in the system

sudo apt upgrade


This command will upgrade all the packages in the system.

17. To fetch the packages updates

sudo apt update


This command will check for updates of all the packages and will add the updates in the list to upgrade.

18. To get the current username



This command is used to print the username of the current user.

19. To change the current user to superuser or root

sudo su


This command will ask for a password and will change the current user to root.

20. To print in terminal

echo " To print something on teminal"


The command will print the mentioned text on the terminal.

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