I'm impressed how many more answers and ideas I got from you. Thank you very much to all for your help. I will read it all and work through in detail to learn more. As far as I could see from the 1st view, I have now several good solutions:
- the "svn info" command from MarkMLl
- I can run "svnversion" in /opt/lazarus_206b/fpcsrc/ (that works, I before used only the wrong folder)
- the next version of fpcupdeluxe will include the revision (thanks DonAlfredo)
- if I sometime want to include the FPC revision# into my compiled binary I have detailed instructions from wp including a demo (many thanks to wp)