Haha, I'm even more confused now. I have no idea what dup is...

▲ jpollock 4 hours ago | parent [-]

There are a couple of ways to figure out.

open a terminal (OSX/Linux) and type:

    man dup

open a browser window and search for:

    man dup

Both will bring up the man page for the function call.

To get recursive, you can try:

    man man unix

(the unix is important, otherwise it gives you manly men)

	▲	Bender 4 hours ago \| parent [-]
		otherwise it gives you manly men That's only just after midnight [1][2] [1] - https://www.youtube.com/watch?v=XEjLoHdbVeE [2] - https://unix.stackexchange.com/questions/405783/why-does-man...