501  cd humboldt/
  502  cd f12cs279
  503  cd 279lectures/
  504  cd 279lect15-1
  505  date
  506  date +%m
  507  date +%a
  508  date +%A
  509  date +%B
  510  date +%b
  511  date +%D
  512  date '+It is now %T on %h %d, 20%y% (%a).%nThank you for your interest'
  513  today=`date +%a`
  514  echo $today
  515  echo "log entry" >> log_${today}.txt
  516  ls
  517  more log_Tue.txt
  518  cal
  519  cal 12 2013
  520  cal 2001
  521  cal 1
  522  cal 7 1776
  523  man cal
  524  man printf
  525  textfile=log_Tue.txt
  526  ls
  527  textfile=log_Tue.txt
  528  printf "The file %s contains %i lines.\n" $textfile `wc -l < $textfile`
  529  printf "%.3f" 13.7
  531  printf "%.3f \n" 1.456789
  532  printf "%7s" moo
  533  printf "%7s \n" moo
  534  df
  535  ssh st10@nrs-projects.humboldt.edu
  536  cd ..
  537  du -a 279lectures
  538  cd ..
  539  du -a 279lectures
  540  du -s 279lectures
  541  du -a 279lectures | sort -n
  542  du -a 279lectures | sort -nr
  543  du -a 279lectures | sort -nr | head
  544  uname
  545  uname -a
  546  ssh st10@nrs-projects.humboldt.edu
  547  ssh 279dummy@nrs-projects.humboldt.edu
  548  cd 279lectures
  549  cd 279lect15-1