502  wget http://gprolog.univ-paris1.fr/unstable/gprolog-20100622.tgz
  503  tar tfz gprolog-20100622.tgz 
  504  ls
  505  rm -fr gprolog-1.4.0
  506  tar xfz gprolog-20100622.tgz 
  507  cd gprolog-1.4.0/
  508  ls
  509  cd src
  510  ls
  511  ls -ltra
  512  find -type f -mtime -3
  513  ./configure --prefix=/opt/gupu
  514  make
  515  history