Tmate debugging

Generate and add an SSH key to GitHub using the command line. This setup is required to use limit-access-to-actor: true in your GitHub Actions tmate session.

1. Install Necessary Tools.

sudo apt install openssh-client git -y

2. Generate the SSH Key. Run the following command, replacing the email with your GitHub account email.

ssh-keygen -t ed25519 -C "your_email@example.com"

• Enter file in which to save: Press Enter to use the default location.
• Enter passphrase: Press Enter twice to skip, or provide a password for extra security.

3. Copy the Public Key Display the content of your public key so you can copy it

cat ~/.ssh/id_ed25519.pub

Select the entire output text (starting with ssh-ed25519 and ending with your email) and Copy it.

4. Add the Key to GitHub.

• Open your browser and log in to your GitHub SSH Settings.
• Click New SSH key.
• Title: Enter a name like "Terminal-debugging".
• Key: Paste the public key you copied from Terminal.
• Click Add SSH key.

5. Test the Connection Verify that Terminal can successfully connect to GitHub via SSH

ssh -T git@github.com

If successful, you will see a message: "Hi [YourUsername]! You've successfully authenticated..."

6. Connect to your GitHub Action Once the Action starts and provides an SSH string, use it directly in Terminal.

ssh <provided_tmate_string>

Because you added your key to GitHub and used limit-access-to-actor: true in your workflow, Terminal will now be the only device allowed to connect to that session

Tmate tweak to off green line

tmux set-option -g status off