Exercises for session 2

Setting up GitHub and Git

Exercise 1: Create a GitHub account if you don't have one yet (see also Register a GitHub account)
- Go to https://github.com/signup and sign up – have a look at https://github.com/signup before picking your user name
Exercise 2: Find your Git (see also Git already installed?)
- which git (Mac, Linux, Git Bash shell on Windows)
- where git (Windows command prompt, i.e. cmd.exe)
Exercise 3: Check which version of Git you have installed
- Run git --version
Exercise 4: Check if you have already configured your Git user name and email
- Run git config --global --list to check all globally defined config variables for Git
- You can also run git config --global user.name or git config --global user.email to only check if you set your name / email
Exercise 5: Introduce yourself to Git if you did not see your name/email in the previous exercise (see also Introduce yourself to Git)
- Run git config --global user.name "your-user-name"
- Run git config --global user.email "[email protected]"

Setting up a local Git repository manually

Exercise 6:
- Open a new project in RStudio
  - Click on File -> New Directory -> New Project (Untick Create a git repository and Use renv with this project because we'll initialise a Git repository manually)
- Go to the Terminal in RStudio (Should be next to your R Console)
- Run git status (You should see an error message like this fatal: not a git repository, why?)
- Run git init (What is happening here?)
- Run git status again (Why do you suddenly see something?)
- Create a new R file and add some text or code
- Run git status again (What has changed?)
- Add the new file to the "staging" area
  - Run git add name_of_your_new_file.R
- Run git status again (What has changed?)
- Run git log --oneline (You should see an error message like this: fatal: your current branch 'main' does not have any commits yet)
- Commit the file Run git commit -m "Add new file"
- Run git log --oneline again (What do you see?)
- Run git remote -v (What do you see? Why?)

Creating a remote GitHub repository

Sorry, I ran out of time preparing this, we'll have to do this together!