# Introduction

The command line interface is run in a terminal (or prompt). It is the direct interface with your computer. There you are able to do the same things are you are able in a graphic interface such as visiting a folder, reading and writing files.

But the command line interface allows you access to a number of other programs which are really useful in a developer's every day life or while participating in CTFs. You should not be an expert, but with little knowledge of the command line you will already be able to do a number of things faster and quicker.

Terminals in Linux and OSX are quite similar, if you run Windows, things are a bit different.

## Understanding paths

TODO

## Basic command line 

* List the files in the current folder: `ls`
* See where you are: `pwd`
* See who you are: `whoami`
* Go in a folder: `cd INSERT_HERE_THE_NAME_OF_YOUR_FOLDER`
* Go in the parent folder: `cd ..`
* Go to your home directory: `cd ~` or `cd`
* Print a file in the terminal: `cat THE_NAME_OF_YOUR_FILE`
* Copy a file: `cp YOUR_FILE YOUR_DESTINATION`

## Run programs in command line

TODO