Last month I spent quite a bit of time whipping up and perfecting my very own CommandLineFixture that allowed me to have a FIT table that interacted with the commandline. This was quite handy as the system under test was using a language there is no fitnesse implementation for, so I whipped up a commandline interface to the program and used my custom CommandLineFixture to interact with it.
Then today I discovered that good old Bob Martin had already made something similar. The interesting thing is his is basically the same. Guess I should have searched first. 
I tired to do this command line thing all i want to do is a way where i can invoke a perl skript from my fitnesse and then use the input parametes from my fitnesse test, i have wat i am supose to get from the script ( i mean th output) but it dosent work do you have some idea about it?