I almost didn't even try to figure it out after I installed and the `superfile` command didn't work.

This happens to me quite often.

pacman -Ql <package> | grep bin

There must be similar commands for other package managers.

Yes, I had the same question! (`spf` for the curious!)

EDIT: To be fair, right at the beginning of the tutorial is:

> First, if you want to open superfile by opening a terminal and typing spf.

A symlink would be a good solution.