Your CGI does not appear to be running as the same user as what your command line is using. Check your permissions on /tmp/blaaaargh, as the error suggests.

Update: Your executable is sending stuff directly to stderr, which the error_log is capturing, but your IO::CaptureOutput object is not. My guess is that either IO::CO does not capture stderr, or you need to provide a flag to have it capture stderr.

--MidLifeXis

In reply to Re: capturing output fails under CGI by MidLifeXis
in thread capturing output fails under CGI by Anonymous Monk

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