1) fchange counts 2 lines in the log file
----r----- 1 bin mem 604136 Jul 21 1992 /unix
----rw---- 1 bin mem 605100 Aug 28 1992 /unix
2) a new line is added via ls.
----r----- 1 bin mem 604136 Jul 21 1992 /unix
----rw---- 1 bin mem 605100 Aug 28 1992 /unix
----rw---- 1 bin mem 535180 Aug 29 1992 /unix
3) the lines are sorted uniquely. Note that this has no effect because
the lines are already unique. In the previous example the duplicate line
was removed.
----r----- 1 bin mem 604136 Jul 21 1992 /unix
----rw---- 1 bin mem 605100 Aug 28 1992 /unix
----rw---- 1 bin mem 535180 Aug 29 1992 /unix
4) fchange counts again and determines that a line was
added.
5) The file has changed. You have mail!
