$stream = `cleartool lsstream -s`;
$output = `cleartool lsco -r -brt $stream -fmt "%En\t%u\n"`;
printf("$output\n");

##</code><code>##

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

##</code><code>##

--05-08T08:02  mkjohnson  checkout version ".\EDC_Export\Test_file2.txt" from \main\p_JOESDRUGS_DT_Int\1 (reserved)
  Attached activity:
    activity:CR0002@\PROD_DT_PVOB  "CR0002"
--05-08T08:31  mkjohnson  checkout version ".\EDC_Export\Test_file3.txt" from \main\p_JOESDRUGS_DT_Int\1 (reserved)
  Attached activity:
    activity:CR0002@\PROD_DT_PVOB  "CR0002"

##</code><code>##

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

##</code><code>##

$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    mkjohnson0