Copy-Paste SSH registration list

I keep this To create an SSH key and register it with GitHub, follow these steps:

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Step 1: Check for Existing SSH Keys

Before creating a new SSH key, check if you already have one:

1. Open a terminal (Linux/Mac) or Git Bash (Windows).
2. Run the following command to check for existing SSH keys:

   ls -al ~/.ssh
   

   Look for files like id_rsa and id_rsa.pub or id_ed25519 and id_ed25519.pub. If they exist, you can use them or create a new one.

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Step 2: Generate a New SSH Key

If you don’t have an SSH key or want to create a new one:

1. Run the following command (replace your_email@example.com with your GitHub email):

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

   • If your system doesn’t support ed25519, use:

     ssh-keygen -t rsa -b 4096 -C "your_email@example.com"
     

2. When prompted to “Enter a file in which to save the key,” press Enter to accept the default location.

3. Optionally, set a passphrase for added security. You can press Enter to skip this step.

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Step 3: Add the SSH Key to the SSH Agent

1. Start the SSH agent:

   eval "$(ssh-agent -s)"
   

2. Add your SSH private key to the agent:

   ssh-add ~/.ssh/id_ed25519
   

   (If you used rsa, replace id_ed25519 with id_rsa.)

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Step 4: Copy the SSH Public Key

1. Copy the contents of your public key to the clipboard:

   cat ~/.ssh/id_ed25519.pub
   

   (Or id_rsa.pub if you used RSA.)

2. Highlight the output and copy it.

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Step 5: Add the SSH Key to GitHub

1. Go to GitHub and log in to your account.
2. Click on your profile picture in the top-right corner and select Settings.
3. In the left sidebar, click SSH and GPG keys.
4. Click the New SSH key button.
5. Give the key a title (e.g., “My Laptop”).
6. Paste the copied public key into the “Key” field.
7. Click Add SSH key.

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Step 6: Test the SSH Connection

1. Run the following command to test the connection:

   ssh -T git@github.com
   

2. If successful, you’ll see a message like:

   Hi username! You've successfully authenticated, but GitHub does not provide shell access.
   

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Step 7: Use SSH with GitHub

Now you can use SSH to interact with GitHub repositories. For example:

• Clone a repository using SSH:

  git clone git@github.com:username/repository.git
  

• Set the remote URL of an existing repository to use SSH:

  git remote set-url origin git@github.com:username/repository.git
  

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That’s it! You’ve successfully created an SSH key and registered it with GitHub. 🎉