quickly send files or control signals between machines by piping them on the command line, with bidirectional authentication and metadata resistance via tor (built on cwtch)
includes a way to quickly exchange onion addresses using a low-entropy shared secret (using pairwise socialist millionaires' protocol on a bbs) and a contact manager
requires you to have go installed and your gopath configured correctly (sorry). it also requires tor to be installed and running, with no authentication on the default control port (sorry, fixing now)
the pairing feature is experimental and kinda flakey right now. you may find it easier to `sendafriend info` to get your identity string, transfer it over some other secure channel, and then `sendafriend add [make-up-a-name] [identity string]` to add it to the contact list