less names.txt 
 head names.txt 
 tail names.txt 
 wc names.txt 
 wc -c names.txt 
 wc -l names.txt 
 du names.txt 
 du -b names.txt 
 diff marley1.txt marley2.txt 
 grep "Andrew" names.txt 
 grep "Riley" names.txt 
 grep "Jessica" names.txt 
 locate names.txt
 find -name names.txt
 find -name *names.txt
 javac Hello.java 
 java Hello
 cat Hello.java 
 java Hello -b jessica purple daisy
 grep hi
 java Hello -b jessica purple daisy > output.txt
 cat output.txt 
 
 Slide 6: 
 sort -r names.txt
 
 Slide 12:
 java HelloWorld -b < input.txt > output.txt
 
 Slide 13:
 grep "A" names.txt | wc -l
 grep "A" names.txt | sort | tail -1 | wc -m