Finally got it to run using the "system call"-approach:

The trick to get it to run on my windows machine was using the "start" 
command (that usually spawns a procell in a new shell). Why windows 
executes the "dir" command without "start" but not the rake command is 
beyond me, but at least now it is working:

Windows:
system('start rake doc:app')

Linux:
system('rake doc:app')



I'd still be interested why the "test_rake"-Funktion in my previous post 
doesn't start the rails task, just in case anybody sees my error...

Thanks for your help!


@marnen
I SWEAR I WILL USE GOOGLE AND CHECK ANY DOCS BEFORE POSTING ;-)







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