egrep "chocolate" candies.txt
egrep ".oo." candies.txt
egrep ".ea." candies.txt
egrep "\." candies.txt
egrep "y$" candies.txt
egrep "^c" candies.txt
egrep -i "^c" candies.txt
egrep -i "^cho" candies.txt
egrep "y\>" candies.txt
egrep "\<c" candies.txt
egrep "y.$" candies.txt
egrep ".y$" candies.txt
egrep "\<...\>" candies.txt
echo "a a" | egrep "\<...\>"
egrep "KitKat|Twix" candies.txt
egrep "KitKat | Twix" candies.txt
egrep "(KitKat|Twix)" candies.txt
egrep -i "(k|p|m)at" candies.txt
egrep "gummy (candy|bears|worms)" candies.txt
egrep "gummy ....." candies.txt
egrep "gummy (candy)|(bears)|(worms)" candies.txt
egrep -i "gummy (candy)|(bears)|(worms)" candies.txt
egrep "kit*" candies.txt
egrep -i "kit*" candies.txt
egrep -i "ki" candies.txt
egrep -io "ki" candies.txt
egrep -io "kit*" candies.txt
egrep -i "kit+" candies.txt
egrep -i "kit ?kat" candies.txt
egrep -i "kit(kat)?" candies.txt
egrep -i "kit *kat" candies.txt
egrep -i "kit +kat" candies.txt
echo "kit           kat" | egrep "kit +kat"
egrep "kit.+" candies.txt
egrep -i "kit.+" candies.txt
egrep -i "kit*kat" candies.txt
egrep -i "al+ad+in" restaurants.txt 
egrep "(0|1|2|3|4|5|6|7|8|9)" restaurants.txt 
egrep "[0-9]" restaurants.txt 
egrep "[2-9]" restaurants.txt 
egrep "[a-d]" restaurants.txt 
egrep "[a-z]" restaurants.txt 
egrep "[A-Z]" restaurants.txt 
egrep "[0-9]0" restaurants.txt 
egrep "[^e]" restaurants.txt 
egrep "[^aeiou]" restaurants.txt 
egrep "[.]" restaurants.txt 
egrep "[.',]" restaurants.txt 
egrep "[0-9]0" restaurants.txt 
egrep "[0-9]" restaurants.txt 
egrep "[0-9]{3}" restaurants.txt 
egrep "[0-9]{2}" restaurants.txt 
egrep "[0-9]{2,}" restaurants.txt 
egrep ".." restaurants.txt 
egrep "(..)\1" restaurants.txt 
egrep "(..)\(10)" restaurants.txt 
egrep ".." restaurants.txt