# Linux Basics

Linux is Mainly used in servers. About 90% of the internet is powered by Linux servers. This is because Linux is fast, secure, and free! The main problem of using Windows servers are their cost. This is solved by using Linux servers. The OS that runs in about 80% of the smartphones in the world, Android, is also made from the Linux kernel. Most of the viruses in the world run on Windows, but not on Linux!

#### ***Linux Shell or “Terminal”***

So, basically, a shell is a program that receives commands from the user and gives it to the OS to process, and it shows the output. Linux's shell is its main part. Its distros come in GUI (graphical user interface), but basically, Linux has a CLI (command line interface). In this tutorial, we are going to cover the basic commands that we use in the shell of Linux.\
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![](/files/la0URPKX3m0sjjfTJVJh)\
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**References:**\
<http://linuxcommand.org/>\
<https://maker.pro/linux/tutorial/basic-linux-commands-for-beginners>


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