This will require Linux and regular expressions to complete. Come up with an egrep command that finds the lines requested.

1. Change directory to /usr/share/dict. We will use the Linux dictionary, the file words, for this step.
   1. Some of the entries consist of words that contain a letter followed by a digit or a digit followed by a letter. Find these and count them (using c).
   2. Find words with that have (at least) 5 consecutive vowels in them (upper or lower case).
   3. Find words that are exactly 12 characters in length (words longer than 12 should not appear).
   4. Find all words that have two consecutive punctuation marks.
   5. Find all words that have two punctuation marks that are not consecutiv