Linux and basic cmds.

Linus Benedict Torvalds is the creator and, historically, the principal developer of the Linux kernel, which is the kernel for GNU/Linux operating systems.

Many of us think that Linux is an OS but the fact is that it is not, Linux is a kernel which is essential part of computer .Linux Distributions such as ubuntu, centos ,kali Linux are OS which are based on Linux Kernel .Now we are clear with what is Linux and another thing we should know is about GUI and CLI. Many times we have heard GUI but what actually is GUI. GUI stands for Graphical User Interface .And CLI stands for Cmd Line Interface. In GUI we Use our mouse to do a particular task. And in CLI instead of  mouse we use cmds to do that task. Windows OS uses GUI as it is easy to operate. And Linux is a Command Line Os where we have to write cmds to perform a particular task.

• Basic Linux Commands : 

1. uname : to get the name of distro that you are using.
2. touch : to create new file. eg touch "file name".
3. mkdir : to create new directory. eg mkdir  "dic name".
4. rm : to delete a file.
5. rmdir :to delete a directory
6. ls : to list the files/directories present the a directory.
7. cd : to change the directory .eg cd home/kali/Desktop.
8. pwd : print the present working directory.
9. clear : clear the screen.
10. history : print the history
11. ifconfig : print the ip address of the machine.
12. cp : copy a file.eg cp "file name".
13. mv : move a file or directory eg mv "location where to move".
14. grep : search for string of characters.
15. less : display content of a file. 
16. cat : to read a file.
17. cat > : read + write.
18. vim : text editor
19. nano : text editor in kali.
20. chmod : to change or edit the permission of a file.
21. echo : to print the input given by you. eg echo Im best.
22. su : switch user.
23. adduser : to add a new user.
24. sudo : to get root privileges.
25. -apt -get update && apt -get upgrade : to update/upgrade the system.
26. man : to get manual of a file/directory/application. eg man ls.
27. exit : to exit the terminal.
28. shutdown : shutdowns the machine.
29. reboot : Reboots the system
30. logout : logout the present user.

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Install Kali Linux on Windows

KALI LINUX : 

Kali Linux is a Linux distribution by Offensive Security for Penetration Testing.Kali is widely used by ethical hacker because it has many preinstalled tool which are required for ethical hacking.And the second reason for being used is its a Linux OS which  is just awesome.

INSTALLING VIRTUAL BOX :

For installing Kali we will use Oracle Virtual Box which is a very popular application because of its ease of usage.Virtual Box helps us to create a virtual machine by staying in Windows which is the primary OS in our device.Just click on the link and you will see offical website of oracle virtual box so you have to download it for windows.And make sure that you also download extension package . 

INSTALLING KALI LINUX:

Many youtubers will suggest you to download the ISO file of Kali but I will not suggest you to do that because it consumes more data and if you are a student like me then you know the value of internet data . I have given a link so click there and download Kali Linux Virtual Box images.

CONFIGURING KALI LINUX:

After downloading VM Kali Linux images you will see a file just double click it and wait for some moment and it will get launched in the Virtual Box and now you just have to do some setting as shown in the pictures.

If you have 8 Gigs of RAM then give at least 4 Gigs to the VM and if you have 4 Gigs then give accordingly.If your CPU is hexa core then give at least 6 threads to VM.If your CPU is quad core then set it to some low value.

The most important part is about Network configuration. Do the settings as shown in the picture.This settings will help you to use internet in you VM using WIFI of your device.

After doing all the configuration just click on start and wait for some moment it will load.Use kali as username and pass then login and you are done here start learning ethical hacking.

Note: When you install Kali Linux you don't have root privileges means you cant access all the tools present in kali because some tool needs root privileges.you have to use sudo su cmd then enter the pass and then you will be able to use that tool.

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