That's horrible advice.

The OP is complaining about errors being misreported, and you introduce a new such error.

exec failures should not appears as exit code from a successfully launched child. Even system and open3 get that right. (They use a close-on-exec pipe to communicate the errno of failures to the parent.)

In reply to Re^3: Effect of redirecting output to /dev/null on $? value by ikegami
in thread Effect of redirecting output to /dev/null on $? value by Special_K

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