That's completely different and done by windows too (and IIRC by default files downloaded via browsers in linux will not have the executable permission). The p

That's completely different and done by windows too (and IIRC by default files downloaded via browsers in linux will not have the executable permission). The parent is talking about having such extremely well done sandboxing so that you can automatically run a compiler on source files (even when downloaded from untrustworthy sources) just to get more info about it.