Connect GitHub Using SSH in Linux Terminal. Push or Pull code using Terminal.
SSH (Secure Shell) provides a secure and password-less way to interact with GitHub. Instead of typing your GitHub username and password every time you push or pull from a repository, you use an SSH key pair (private + public key) to authenticate automatically and securely.
This is especially useful because GitHub no longer supports password authentication for Git operations, and SSH is one of the recommended alternatives.
XXX Steps to Connect to GitHub Using SSH on Linux. XXX
1. Check for existing SSH keys
Open the terminal and run:
ls -al ~/.ssh
This lists your existing SSH keys (if any). You're looking for files like id_rsa or id_ed25519.
2. Generate a new SSH key (if needed)
If you don’t have one, create it with:
ssh-keygen -t ed25519 -C "your_email@example.com"
If ed25519 isn't supported on your system:
ssh-keygen -t rsa -b 4096 -C "your_email@example.com"
When prompted, press Enter to accept the default file location.
You can set a passphrase or leave it empty.
3. Start the SSH agent
This background process helps manage your keys:
eval "$(ssh-agent -s)"
4. Add your SSH private key to the agent
ssh-add ~/.ssh/id_ed25519
5. Copy your SSH public key
This is the key you give to GitHub:
cat ~/.ssh/id_ed25519.pub
Copy the output manually or with a clipboard tool like xclip.
6. Add your key to GitHub
Go to https://github.com/settings/keys
Click New SSH key
Paste the public key
Give it a name (e.g., "My Linux PC") and save
7. Test the connection Run:
ssh -T git@github.com
The first time, it will ask to verify GitHub’s identity. Type yes.
If successful, you’ll see:
Hi your_username! You've successfully authenticated, but GitHub does not provide shell access.
8. Use SSH when cloning or updating remotes When cloning a repo, use:
git clone git@github.com:username/repository.git
Or, if you already cloned via HTTPS and want to switch:
git remote set-url origin git@github.com:username/repository.git
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