501  cd humboldt/
  502  cd f12cs279
  503  cd 279lectures/
  504  cd 279lect15-2
  505  emacs clicker1.sh
  506  clicker1.sh
  507  fg
  508  clicker1.sh
  509  fg
  510  clicker1.sh
  511  fg
  512  clicker1.sh
  513  fg
  514  clicker1.sh
  515  grep case *
  516  emacs clicker3.sh
  517  clicker3.sh 1
  518  fg
  519  fg
  520  clicker3.sh 2
  521  fg
  522  clicker3.sh 3
  523  fg
  524  clicker3.sh 4
  525  fg
  526  clicker3.sh 4
  527  clicker3.sh 5
  528  clicker3.sh 6
  529  fg
  530  clicker3.sh 5
  531  clicker3.sh 6