On Sat, 2012-06-09 at 12:58 -0600, Bob Proulx wrote: 
> tags 676718 + moreinfo
> thanks
> 
> shawn wrote:
> > EXAMPLES
> >        comm -3 file1 file2
> >               Print lines in file1 not in file2, and vice versa.
> > 
> > seemingly conflicts with the documentation give above:
> > 
> >        -3     suppress column 3 (lines that appear in both files)
> 
> I see no conflict here.  In what way is the example in conflict with
> the previous documentation?
> 
> Bob

If you supressed column 3, wouldn't you end up with all
non-common/unique lines in BOTH files, according to the lower
documentation.


Also, needs a warning in man page about needing to sort files first,
which was the real problem I was having. (found doc here:
http://pubs.opengroup.org/onlinepubs/009604599/utilities/comm.html )


APPLICATION USAGE

    If the input files are not properly presorted, the output of comm
might not be useful.


-- 
-Shawn Landden




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