Setup: Verify your setup

After this lesson you can

• Check from Git Bash that each course tool is installed
• Publish a new project to GitHub with git init, add, commit and push

Key takeaways

• Each tool's --version command in Git Bash should print a version number. command not found means going back to that tool's Setup exercise.
• git init makes a folder a repository, git add chooses the files to save, and git commit -m saves them with a message.
• To publish, create an empty GitHub repository, link it with git remote add origin, then send your commit with git push -u origin main.

Windows only. This last exercise checks that your tools work together. You will write a small C# program, save it with Git, publish it on GitHub, and ask SQL Server a question.

Check every tool

Open Windows Terminal. It should open in Git Bash. Run these commands one at a time:

git --version
dotnet --version
code --version
node --version
npm --version

Each one should print a version number. dotnet --version should start with 10.0, and node --version with v24. If any of them prints command not found, go back to that tool's Setup exercise.

Write a C# program

Create a folder for your course work and a project folder inside it:

mkdir -p ~/bootcamp/hello-csharp
cd ~/bootcamp/hello-csharp

Open a new C# file in VS Code:

code hello.cs

Type this program into the file, then save it with Ctrl+S:

Console.WriteLine("Hello, C#! My computer is ready.");

Back in Git Bash, run it:

dotnet run hello.cs

The first run takes a few seconds while .NET builds your program. Then you should see:

Hello, C#! My computer is ready.

See your project in File Explorer too:

explorer .

File Explorer opens C:\Users\ followed by your username and \bootcamp\hello-csharp, with your hello.cs file inside.

Save it with Git

git init
git add hello.cs
git commit -m "My first C# program"

git init makes this folder a Git repository. git add chooses the file to save, and git commit saves it with a message. You should see 1 file changed.

Publish it on GitHub

1. Sign in at github.com. Click the + at the top right and choose New repository.
2. Set Repository name to hello-csharp. Leave everything else as it is: do not add a README, a .gitignore, or a license.
3. Click Create repository.

GitHub shows a page of commands. Under …or push an existing repository from the command line, copy the line that starts with git remote add origin and run it. It looks like this, with your username:

git remote add origin https://github.com/your-username/hello-csharp.git

Then push your commit:

git push -u origin main

The first time you push, Git Credential Manager opens a Connect to GitHub window. Choose Sign in with your browser, then click Authorize on the GitHub page. After that, Git remembers you.

Refresh the repository page on GitHub. You should see hello.cs. Click it to read your code online.

Check Visual Studio and SQL Server

1. Open Visual Studio 2026. The start window should offer Create a new project. Close it.
2. Open SQL Server Management Studio 22 and connect to localhost with Windows Authentication and Trust server certificate checked.
3. Click New Query, type SELECT @@VERSION;, and press F5. The result starts with Microsoft SQL Server 2025.

You did it! Your computer is ready for the course.

Common problems

Check yourself

2 questions to try on the lesson page.

So what

Write, run, save, publish: you just did the whole loop a developer repeats every day, on your own computer, with the same tools professionals use.

Key terms

• git init
• git add
• git commit
• git push