ln --symbolic ../../bysemester/s09/ai.pdf  ../../byexam/ai/s09.pdf
# ln --symbolic ../../bysemester/s09/ca.pdf  ../../byexam/ca/s09.pdf
  ln --symbolic ../../bysemester/s09/db.pdf  ../../byexam/db/s09.pdf
# ln --symbolic ../../bysemester/s09/gr.pdf  ../../byexam/gr/s09.pdf
  ln --symbolic ../../bysemester/s09/fc.pdf  ../../byexam/fc/s09.pdf
# ln --symbolic ../../bysemester/s09/mp.pdf  ../../byexam/mp/s09.pdf
# ln --symbolic ../../bysemester/s09/na.pdf  ../../byexam/na/s0s09.pdf
  ln --symbolic ../../bysemester/s09/os.pdf  ../../byexam/os/s09.pdf
# ln --symbolic ../../bysemester/s09/pl.pdf   ../../byexam/pl/s09.pdf
# ln --symbolic ../../bysemester/s09/net.pdf   ../../byexam/net/s09.pdf