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Execute a command, and returns output from STDOUT and STDERR. Much like
system(). $? is set. (Much cheaper than using open3() to get the same
info.)
If $debug is set, on-the fly diagnostics will be reported about how much
data is being read.
Author: Brian Reichert <reichert@numachi.com>
WWW: http://search.cpan.org/search?dist=System2
-Anton
<tobez@FreeBSD.org>
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