To capture STDERR with backquotes, use:

$output = `cmd 2>&1 1>/dev/null`;

If you want both, omit redirecting STDOUT to /dev/null:

$output = `cmd 2>&1`;

However, it is generally safer to use open3.

In reply to Re^2: Problems with open3 by RonW
in thread Problems with open3 by stdietz

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