Besides of what @peerreynders says, please check using on a terminal, as there you might see output on stderr which is ignored by System.cmd/3 (unless combined with stdout using an option to the call).
Besides of what @peerreynders says, please check using on a terminal, as there you might see output on stderr which is ignored by System.cmd/3 (unless combined with stdout using an option to the call).
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