[lmm]

You can use four leading spaces at the start of each line for a code block.

What you've posted doesn't look substantial enough to be copyrightable to me; the idea of writing a main containing a while loop is certainly not original to the university, and the comments would presumably not be present in this repo since they'd've been replaced by working code. I sure hope the university of Illinois doesn't own the copyright on any shell I write from now on, because that would be ridiculous.