Disclaimer: This is not secure and is intended only for basic usage, because it sucks when you can’t implement something so simple in a short time. (example: for file backup to a remote server)
Scenario: You want to access the remote server from the localhost. Or, you want to backup files from localhost to a remote server. All without the trouble of entering password (also removes the human factor and allows automation).
L$> ssh-keygen -t dsa
Do not type in any passkey. Just press enter.
L$> ls ~/.ssh/
L$> cat ~/.ssh/id_dsa.pub
Copy the entire line, from ssh-dss to [email protected]