We used about 200-500 lines of not particularly dense Perl (with "use strict" and "use warnings" of course) to handle command inputs (limited to bits set and cleared in a single command word -- this is, after all, a sounding rocket) and change instrument mode. Primary functionality was handled with code written in "C" to acquire data from the onboard cameras, control the mechanisms, and display telemetry over a realtime video feed. Individual functions were accessed from the UNIX command line interface.

RAISE included three separate computers handling different aspects of the flight.

The Perl daemons' role was to control instrument mode and process uplink commands, by monitoring running processes and launching new tasks as necessary. Pretty vanilla IPC and task management stuff, except that it was being used in a mission critical context (admittedly, in a sounding rocket rather than a deep space mission). This is important because it might be seen as advancing Perl to NASA's TRL 8 or 9 for certain applications.