1028  cat classes.txt 
 1029  grep -E "CSE" classes.txt 
 1030  grep -E "CSE[^3]" classes.txt 
 1031  grep -E "CSE[^3][0-9]{2}" classes.txt 
 1032  cat names.txt
 1033  sed -r 's/Kanye/Josh/' names.txt 
 1034  cat names.txt
 1035  sed -ri.bkp 's/Kanye/Josh/' names.txt 
 1036  ls
 1037  cat names.txt.bkp 
 1038  cat names.txt
 1039  mv names.txt.bkp names.txt
 1040  sed -r 's/Jo/Josh/' names.txt 
 1041  sed -r 's/Jo/Josh/g' names.txt 
 1042  sed -r 's/Jo/Josh/2' names.txt 
 1043  sed -r 's/Jo/Josh/g' names.txt 
 1044  sed -r 's/Jo/Josh/' names.txt 
 1045* sed -r 's/Jo/Josh/g' names.txt 
 1046  echo "/"
 1047  echo "/" | sed -r "s/\//josh/"
 1048  sed -r 's/Jo/Josh/g' names.txt 
 1049  cat names.txt 
 1050  sed -r 's/\<John\>/Josh/g' names.txt 
 1051  sed -r 's/\<Jo\>/Josh/g' names.txt 
 1052  ls
 1053  cat emails.txt 
 1054  sed -r 's/uw.edu/cs.washington.edu' emails.txt 
 1055  sed -r 's/uw.edu/cs.washington.edu/g' emails.txt 
 1056  sed -r 's/uw/cs.washington/g' emails.txt 
 1057  sed -r 's/uw\.edu/cs.washington.edu/g' emails.txt 
 1058  sed -r 's/uw\.edu/c<.washington.edu/g' emails.txt 
 1059  sed -r 's/uw\.edu/c.washington.edu/g' emails.txt 
 1060  cat names.txt 
 1061  grep -E "^(.*)," names.txt 
 1062  sed -r 's/^(.*), (.*)/\2, \2/g' names.txt 
 1063  sed -r 's/^(.*), (.*)/\2, \1/g' names.txt 
 1064  cat names.txt 
 1065  sed -r 's/^(.*), (.*)/2, \1/g' names.txt 
 1066  sed -r 's/^(.*), (.*)/\2, \1/g' names.txt 
 1067  sed -r 's/^(.*), (.*)/\2, \1/' names.txt 
 1068  cat emails.txt 
 1069  sed -r 's/^(.*)@/\1/g' emails.txt 
 1070  sed -r 's/^(.*)@(.*)/\1/g' emails.txt 
 1071  hschafercs.washington.edu
 1072  ls
 1073  cat csfaculty.html 
 1074  vim csfaculty.html 
 1075  grep "<div class='directory-email'>" csfaculty.html | sed -r "s/ *<div class='directory-email'>(.+)<img src='\/images\/bw_ampersand.png'><\/img>(.+)<\/div>/\1@\2/g"
 1076  ls
 1077  vim classes.txt 
 1078  history
 1079  ls
 1080  cd ..
 1081  history > commands.txt