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Exercise #2 Answers
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1.  $ env | wc -w

2.  quotes, redirection, variables, GLOBs

3.  ^C  (CTRL-C)

4.  3

5.  4

6.  The size of the item in bytes (in this case, a directory)

7.  *

8.  an error message from ls saying it can't find the name '*'

9.  one file name 'wc' and two option letters in -wc

10. 2

11. rm '/a/a?'  -OR-   rm "/a/a?"   -OR-   rm /a/a\?

12. cow/*

13. echo [0-9][0-9][0-9]

14. 5

15.  echo *x*

16. *

17. 3

18. True

19. False

20. man -k password | wc -l   --->   50