For those learning OS X or other Unixy based systems, and for those who have been using them for decades, man is one of the most important commands in our arsenal. The man command is short for manual and shows us how to use each command that has a man page, or a page that acts as an instruction manual for the command (or method). Another command, apropos, searches the whatis database for objects that match a string, or entry. For example, if you’d like to see a listing of all man pages that reference the word case, use the following command: apropos case Or use whatis in the place…