I’ve dowlnoaded an utility named FINDMBR that do exactly what do you want to (and more). I can’t find the origin but basically it do a query over file QADBXREF and select all records with DBXTYP = ‘S’ (source files) and for each record uses QUSRMBRD to verify/retrieve Member text. This utility makes a SFL and let you do some actions over members found like copy, view, edit, etc. It’s VERY useful.
I found the original .zip with all the code and put it on our web server. You can download it from