On Feb 28,  4:26pm, Michael Havens wrote:

> Why would I have a file, uniq the output, have the output redirected to a 
> file, and the file be blank when I tried to look at it?
[...]
> [bmike1@localhost training]$ uniq test-sor >test-sor
> [bmike1@localhost training]$ more test-sor

Because the file is truncated by the shell before ``uniq'' gets to operate
on it.  By the time ``uniq'' opens it, it's already empty.

Kevin