[--outfile=<outfile>] [--all|--type=<peer|poller|master>] [source]..
Fetch public ssh keys from specified remote node(s) (sources).

The keys will be written to the specified outfile, or if not
specified, default to: ~/.ssh/authorized_keys

If no key exists on any of the specified remote nodes, a new key
will be generated automatically.

A combination of different node types as well as specific nodes
can be specified at the same time.
