Generate an SSH key on the Ubuntu server:
`ssh-keygen -t ed25519 -C “your_email@example.com”`
Press Enter to accept the default file location
Enter a passphrase if desired
Start the SSH agent:
`eval “$(ssh-agent -s)”`
Add the private key to the SSH agent:
`ssh-add ~/.ssh/id_ed25519`
Copy the public key:
`cat ~/.ssh/id_ed25519.pub`
Add the public key to GitHub:
Go to GitHub
Open `Settings`
Select `SSH and GPG keys`
Click `New SSH key`
Paste the public key
Save the key
Test the SSH connection:
`ssh -T git@github.com`
Configure Git identity if needed:
`git config –global user.name “Your Name”`
`git config –global user.email “your_email@example.com”`
Clone the repository using SSH:
`git clone git@github.com:username/repository.git`
If importing an existing key file, copy it to the server:
`scp ~/.ssh/id_ed25519 user@server:~/.ssh/`
`chmod 600 ~/.ssh/id_ed25519`
`ssh-add ~/.ssh/id_ed25519`
If using a different key name, specify it explicitly:
`ssh-add ~/.ssh/your_key_name`