Which package would that be in?

On Debian/Ubuntu, you can use the `apt-file` package to determine what package a file resides in. For example:

    apt-file search /bin/tree

`brew install tree` on OSX

Also this bash function from Mathias Bynen's famous dotfiles is a fantastic shortcut for colorised (and more) output from tree. https://github.com/mathiasbynens/dotfiles/blob/master/.funct...

tree on ubuntu