There are times you SSH into a server frequently enough to not want to always enter a password. Here's how to avoid the password prompt.
1. Create your SSH key
Note: Just hit enter for each of the prompts. If you actually enter a passphrase, you'll still have to type the it every time.
2. Copy your key to the remote server
cat ~/.ssh/id_rsa.pub | ssh USERNAME@DOMAIN.TLD "mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys"
That's it! On your next SSH login you won't be prompted for a password.