How do you convert a scid database into a pgn database? So I got a big scid database and ScidvsMac. I would like to convert the complete database into a pgn database. So far I have only found out how to convert single games into pgn, something I'm not keen on doing a million times. 

So how do you do this with scid? And if scid doesn't have this functionality, is it possible to maybe do it game by game via command line?
Go to the Tools menu and somewhere down you will find under the option Export Current Game the option Export All Filter Games. In this sub-menu there is the option to export them as PGN.