> I am trying to use the "Popen" function in Read mode.
> I first tried the example (---Write---) from the manual (see beneath).
> The POpen gives an error 25 (Not a typewriter) but it looks like it works.
> I try to do almost the same (---Read---)to read the output, but I cannot get 
> this to read 
> anything. As far as I can tell, the script is not executed.
> Dos anybody have a hint.

I don't have time to test your program atm, but I can see directly that the
program is wrong. You are only allowed to check errno if popen returns -1
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