combining files and testing results

[Patrick O'Callaghan]

On Wed, 2013-05-15 at 16:02 +0100, Dave Mitchell wrote:
> On Tue, May 14, 2013 at 12:31:42PM -0430, Patrick O'Callaghan wrote:
> > If not, then "cat *.list|sort -u" is enough.
> 
> Or even just
> 
>     sort -u *.list

Indeed. Kernighan has a comment somewhere on the psychology of why
people prefer "cat ...|foo" over "foo < ..." or "foo ..." even though
the former is slightly more expensive.

poc