$output = system("cleartool lsco -r -brt p_JOESDRUGS_DT_Int -fmt \"%En\\t%u\\n\"");

##</code><code>##

.\EDC_Export\Test_file2.txt     mkjohnson
.\EDC_Export\Test_file3.txt     mkjohnson
0

##</code><code>##

$output = system('cleartool', 'lsco', '-r', '-brt', $stream, '-fmt', '\"%En\\t%u\\n\"');

##</code><code>##

cleartool: Warning: Type not found: "p_JOESDRUGS_DT_Int".
0