HW4 - Chapter 7 exercises (6 questions)
Max=12

Most everyone did excellent. Only comment was that some
did not list ALL of the file types from /etc/*

I also have a quarrel with the author on problem 7.4.
You are asked to identify the binary files and the
symbolic links from the ls -F command. That will tell
you which of the files are symbolic links. However,
the binary files and the text-files that happen to be
executable (such as scripts) will all look the same.
So the 'file' command must be used to further look
at the files and see which of them are really
binary files.