Comment by egypturnash

"man" is the English term for "an adult human male".

"bro" is short for "brother", and is a thing a certain set of English-speaking adolescent and adult males call each other to express their affection for each other.

"man" is a shortening of "manual", used to name a Unix command which will show you the docs for a command-line tool.

"bro" is a Unix command which will show you a brief example of how to use a command-line tool and nothing else. If you're lucky it may be exactly what you want to do. But probably not.

So the wordplay here: two three-letter words for a particular kind of guy, for Unix commands that tell you how to use other commands. And if they decide to change the name based on people objecting to the cultural assumptions they see in "bro", I'd suggest "guy". Or maybe "dude", which is a little longer, but always feels more laid-back and chilled-out to me than what "bro" has become.

Hope that helps!