hello rust introduction

subjects/hellorust/README.md

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+## hellorust
+
+### Introduction
+
+Hello and welcome to rust. 
+The goal of this first exercise is to configure your repository properly and to give you a set of rules for the whole piscine rust. 
+Make sure those rules are followed consistenly during the whole piscine.
+
+### Instructions
+
+#### 1- get-ready
+
+Create in your [Gitea](https://git.[[DOMAIN]]) account the repository named `[[ROOT]]`.
+
+This repository will be the folder where all the exercices must be uploaded.
+
+Once created, clone that repository on your desktop.
+
+If your username was `choumi` this is the command that will need to be used :
+
+`git clone git@git.[[DOMAIN]]:choumi/[[ROOT]].git`
+
+This command needs to be adapted with **your own username**.
+
+If the `git clone` gives you an authenticity of host error, your SSH key must be configured.
+Follow the steps below.
+
+#### SSH Configuration
+
+Execute the following commands:
+
+```console
+mkdir -p ~/.ssh
+ssh-keygen -t ed25519 -f ~/.ssh/id_ed25519 -N ''
+cat ~/.ssh/id_ed25519.pub
+```
+
+- Copy the result and paste it in the content field of adding an ssh key in your settings (adapt the link with your username).
+
+[https://git.[[DOMAIN]]/choumi/settings/keys](https://git.[[DOMAIN]]/choumi/settings/keys)
+
+- Confirm by clicking on the add key button.
+
+Once this is done the git clone command should work now.
+
+#### gitignore file
+
+Once you repository is cloned,
+edit the .gitignore file and add this line:
+```console
+**/target/*
+```
+The goal of this setup is to avoid any binary files to be pushed in your gitea accidentaly. 
+
+
+#### 2- get-ready
+
+Below are the commands that you must use during this piscine for initiating programs and functions.
+
+#### Commands for a program
+
+```console
+Cargo --vcs=none new name-of-exercise
+```
+
+#### Commands for a function
+
+```console
+Cargo --vcs=none new --lib name-of-exercise
+```
+
+#### 3- try it yourself
+
+Execute the below command inside your repository
+
+```console
+Cargo --vcs=none new hello_rust
+```
+
+Then adapt the `main.rs` so that it would display `Hello, Rust!`
+
+You can test it with the below command inside the folder of your exercise.
+
+```console
+Cargo run 
+```
+This command will compile, and run the binary. 
+
+#### 4- return your solution
+
+After that the `hello_rust` project is executing correctly, it needs to be uploaded to the repository with the following commands :
+
+1. `git add hello_rust/`
+2. `git commit -m "My very first rust commit"`
+3. `git push`
+
+Once these steps are applied, the project can now be submitted for grading on the platform by clicking on the "RUN HELLO_RUST..." button.
+
+This action will run the tests on your submitted `hello_rust` folder.