[p4] how to find out who has what checked out?

[Hamid Ghassemi]

I am trying to move a directory from one location to another and I get
the following message;

 

Rename/Move could not be performed

Files within this directory are already checked out:

//depot/development/internal/

 

How can I find out who has files checked out in this directory without
trying to run "p4 opened" against every workspace?  We have a lot of
them.

 

Thanks in advance.

 

Hamid Ghassemi