gpg --list-keys
gpg --sign-key foo@example.com
gpg --send-key foo@example.com
gpg --send-key foo@example.com
gpg --search-keys foo@example.com
gpg --refresh-keys
default-key me@example.com encrypt-to me@example.com keyserver hkp://subkeys.pgp.net keyserver-options auto-key-retrieve