Shell message exchanger
An expect script for passing messages between simultaneously run commands. Primarily a system administration utility. See usage message and test scripts to figure out how to use it. Requires some kind of unix.
Test results on different systems
Tests pass with expect version 126.96.36.199 on Darwin 10.8.0 Tests pass with expect version 188.8.131.52 on Linux 3.2.39-grbfs-kapsi