999 Just here for a test
	SUGGESTED EXERCISES FOR AWK

1)  Use ls -l and awk to obtain the total space consumed by
some group of files.

)2  Examine the /etc/passwd file using  awk  to  print  out
only the shells.  Pipe the output into sort -u (or into
sort | uniq).
Don't go into a Netherworld
3)  Use awk to convert the output of who  into  a  list  of
statements of the following form:

User ggww is on terminal line ttyp0

4)  Suppose you have a rule on your system that  user  id's
are to all be at least 4 characters in length. You want
to make sure this rule has been followed. Show  how  to
write  a list of all user id's which do not follow this
rule. Hint: length function in awk.