Convert RAW files on a Mac using "sips"

I recently needed to convert Canon *.CR2 RAW files to JPEG. What I did not know is that a Mac brings all you need preinstalled in form of a CLI tool called sips.

for i in *.CR2; do
  sips -s format jpeg $i --out "${i%.*}.jpg"
done

Also: man sips works just fine for more information.

Source: Coderwall