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if (system ( "/usr/bin/cp -f $version/$obj $dest 2> /dev/null")) {
if (system ( '/usr/bin/cp', '-f', "$version/$obj", $dest '2>', '/dev/null')) {
if (system ( /bin/sh', '-p', '-c', '/usr/bin/cp', '-f', "$version/$obj", $dest '2>', '/dev/null')) {