SSH key: How to use the keychain for the passphrase
If you use an SSH identity to connect to remote hosts, chances are you dislike typing the passphrase over and over again (especially with GitHub).
You could certainly use an empty passphrase, but there's a better way. You can actually configure the SSH client to use your keychain instead, by creating ~/.ssh/config (I set the mode to 600):
Then, at the next connection, your password will be saved!