The changeset of an activity can show the date of the files. You just need to combine your describe
command with a fmt_ccase
format instruction.
cleartool describe -fmt "%[versions]CQp\n" activity:myActivity@/pvobName
For each of the output:
cleartool describe -fmt "%u %n %d" aFile@@/main/branches/x
Note: On Windows, you can list all the activities for a given user.
First, go into a UCM view associated with the relevant stream. Then:
for /f %x in ('cleartool lsact -cview -fmt "%Xn %u\n" ^| findstr "username"')
do cleartool desc -fmt "%[versions]CQp\n" %x
You can also script this in Perl (which would then be portable, both on Windows and Unix).
See SO question "How can I interact with ClearCase from Perl?"