I'm working on a Windows application that grabs GPS and Iperf data. My app accesses the GPS receiver through a serial port by way of GPS::NMEA, and it gets the Iperf data by way of `iperf -c $options`. The backquoted command works until a GPS capture has been performed, but after even a single GPS capture the backquoted Iperf command, in fact *any* backquoted command, causes my app to hang. An attempt to have the command pipe its output to a filehandle gives the same result.

In reply to GPS capture blows away subsequent backtick command by JustMu

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