MEME: What Was Your First Useful Program?

I woke up this morning thinking to myself, “how can I boast about the very first program I ever wrote?” Then, 2.1ms later, I remembered twitter. Moving beyond my own rampant narcissism, I want to know about the first useful computer program you ever wrote.

I suggest the following format:

#myfirstprogram unix, shell, “The Awesomizer” substituted the word “awesome” for my name in any document

But hey, it’s Twitter, so go wild, make it your own.