ln --symbolic ../../bysemester/s05/ai.pdf  ../../byexam/ai/s05.pdf
  ln --symbolic ../../bysemester/s05/ca.pdf  ../../byexam/ca/s05.pdf
  ln --symbolic ../../bysemester/s05/db.pdf  ../../byexam/db/s05.pdf
# ln --symbolic ../../bysemester/s05/gr.pdf  ../../byexam/gr/s05.pdf
  ln --symbolic ../../bysemester/s05/fc.pdf  ../../byexam/fc/s05.pdf
# ln --symbolic ../../bysemester/s05/mp.pdf  ../../byexam/mp/s05.pdf
# ln --symbolic ../../bysemester/s05/na.pdf  ../../byexam/na/s05.pdf
  ln --symbolic ../../bysemester/s05/os.pdf  ../../byexam/os/s05.pdf
# ln --symbolic ../../bysemester/s05/pl.ps   ../../byexam/pl/s05.ps