talkcmd

Documentation

Overview

Package talkcmd implements the POSIX talk(1) interface for two users logged in on the same host.

Historical BSD talk used talkd and network sockets. POSIX deliberately does not require remote-host operation. This implementation was written from the public interface, not from BSD C source: it rejects host-qualified names, writes the invitation to a real logged-in terminal, and exchanges encrypted, authenticated datagrams through ephemeral AF_UNIX sockets. Only short-lived public-key endpoint metadata touches disk. No transcript is posted to the public message board and all session entries are removed on exit.