Imports github.com/juju/utils/exec code.google.com/p/go.crypto/ssh github.com/juju/cmd github.com/juju/errors github.com/juju/loggo github.com/juju/utils github.com/juju/utils/set Standard library imports crypto/rsa encoding/pem crypto/md5 bytes crypto/rand crypto/x509 errors fmt io io/ioutil net os os/exec os/user path/filepath runtime strconv strings sync syscall time