The short version:
Code: Select all
~/Library/Application\ Support/Steam/steamapps/common/Factorio/factorio.app/Contents/MacOS/factorio --map2scenario onlyNameOfSaveFile
Further, I'm not sure whether it's very fond of spaces. So if you have problems and you have spaces in the savegame name --> try removing them. And by removing I mean make a new savefile in-game without spaces.
Running:
- Mac OS X Yosemite
- Factorio 0.12.33 installed through Steam