What does Unix "lunch" command do?

Solution 1:

I did not have it installed:

aularon@aularon-laptop:~$ lunch
The program 'lunch' is currently not installed.  You can install it by typing:
sudo apt-get install python-lunch
aularon@aularon-laptop:~$ 

From package info (apt-cache show python-lunch):

Lunch is a simple distributed process launcher and manager for GNU/Linux. . With Lunch, one can launch software processes on several different computers and make sure they keep running. This software was created to suit the needs of new media artists for live performances and interactive installations. It respawns the software that crash and provides a mean to manage dependencies between running processes. . This package provides the lunch library for Python. as well as the command-line lunch utility which can be invoked with a GTK+ user interface.

Solution 2:

It is the Lunch Distributed Process Manager.