Let us break the ice and get started with Linux systems.
You will find the equivalent of what is presented here in the great video by cocadmin.
Command summary
pwd = Print Working Directory / Show the current directory
ls = List / List the content of the directory
mkdir nom_du_dossier = Make Directory / Create a directory
mv chemin_du_dossier nouveau_chemin_du_dossier = move or rename
cd chemin_du_dossier = Change Directory / Change directory
nano hello.txt = edit the file hello.fr
In nano you can save with CTRL+O
then Enter to confirm
and quit with CTRL+X
cat hello.txt = Show the content of the file
cd /home/mdc = Return to the home directory of user mdc
cd = Home of the personal directory
history = View the command history
sudo apt install apache2 = install the web service
cd /var/www/html = move to the web directory
sudo mkdir site-monprénom = Create a directory
cd /var/www/html/site-monprénom = Move into the directory
sudo nano mapage.html = create a mapage.html file
<!DOCTYPE html>
<html>
<head>
<title>My simple HTML page</title>
</head>
<body>
<h1>Welcome to my simple HTML page</h1>
<p>This is an example paragraph.</p>
</body>
</html>
adduser nom_utilisateur = Adding a new user
sudo usermod -aG sudo nom_utilisateur = Adding sudo rights to the user
To test the new user
exit = Quit the session
ssh nom_utilisateur@IP_serveur = Connect to the server with the new user
sudo passwd nom_utilisateur = Change a user's password