# Command Line Interface

![CLI in detailed-001.png](https://cdn.hashnode.com/res/hashnode/image/upload/v1659271039959/1d2gRotAq.png align="left")

- **Kernel** : Actual program that interfaces with the hardware, Core of operating system.
- **Shell** : User interface for you as a human to be able to interact with the kernel and in turn with the hardware of your computer.

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**Shell**
- Graphical User Interface Shell
- Command Line Interface Shell

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**Why do we use command line instead of Graphical User Interface?**
- You will need to understand and exert more power over your tools that is the computer hardware.
- On a more day to day basis, You will find that If you are a regular command line user, It is actually easier and faster to do a lot of really common things.

**Command Line Examples**
```
mkdir music // make a folder and name it "music"
ls -a // you can even see hidden folders and files in your directory
mkdir .secrets // make a secret folder
touch text2.txt // make a file and the extension is whatever you want
open text2.txt // open the file in mac
start text2.txt // open the file in windows
rm text2.txt // remove text2.txt
rm * // remove all files
rm -r music // remove the folder and also files or directory in the folder
```