grep -E "[aeiou]" candies.txt
grep -E "[a-z]" candies.txt
grep -E "[^aeiou]" candies.txt
grep -E "^[a-z]+$" candies.txt 
grep -E "^[^a-z]+$" candies.txt 
echo "struggle" 
echo "struggle" | grep -E "[^aeiou][^g]"
head classes.txt 
tail classes.txt 
grep -E "^cse" classes.txt
grep -E "^cse" classes.txt | grep -Ev "cse391" 
cat names.txt
sed -r "s/Beyonce/Zorah" names.txt
sed -r "s/Beyonce/Zorah/" names.txt
cat names.txt
sed -r "s/Jo/Bozo/" names.txt
sed -r "s/Jo/Bozo/g" names.txt
sed -r "s/([a-zA-Z]+), ([a-zA-Z]+)/\2 \1/g" names.txt
sed -r "s/(([a-zA-Z]+), ([a-zA-Z]+))/\1  \2  \3/g" names.txt
sed -r "s/(([a-zA-Z]+), ([a-zA-Z]+))/\1  xxx \2  xxx \3/g" names.txt
sed -r "s/([a-zA-Z]+), \1/\1/g" names.txt
cat names.txt
sed -r "s/Beyonce/Zorah/g" names.txt 
sed -r "s/Beyonce/Zorah/g" names.txt > better_names.txt
cat better_names.txt 
cat names.txt
sed -r -i "s/Beyonce/Zorah/g" names.txt
cat names.txt
sed -r -i.bkp "s/Beyonce/Zorah/g" names.txt
ls
sed -r "s/zorah/Beyonce/gi" names.txt
grep -E "[a-zA-Z0-9_\-]+@(([a-zA-Z0_\-])+\.)+[a-zA-Z]{2,4}" atmosfaculty.html
grep -E "[a-zA-Z0-9_\-]+@(([a-zA-Z0_\-])+\.)+[a-zA-Z]{2,4}" csfaculty.html 
clear
grep "<div class='directory-email'>" csfaculty.html
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"
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" | tee emails.txt
head emails.txt