I noticed there are a few users having problems with the command: ssh-copy-id -i ~/.ssh/id_rsa.pub [email protected] They get an error something like this: 21 /usr/bin/ssh-copy-id: ERROR: No identities found There seems to be some bug in the way the program parses the arguments (which may actually be a different issue). These commands should work, but do not: ssh-copy-id -h ssh-copy-id --help However, this works: cd /backup ssh-copy-id -i .ssh/id_rsa.pub [email protected]