Server commander

[JuliB]

I knew io.popen is sometimes weird on Linux, but I didn't know it would create a deadlock :/ The command you're trying to execute, does it terminate quickly afterwards, or will it always be active? If it's always active perhaps try to put a "&" after it. (<whatever command> &). In windows try putting "start /b" in front (start /b <whatever command>)

Thank you for the answer! After I entered the command, I don't receive any reaction, until the server crashed with that error message.The & char doesn't change anything, but maybe it's possible to find an alternative.
Is it posssible to create a empty file with a specific name? I could create a backround process, that checks the avaibility (correct english word?) of the file and reacts then.