[RndTbl] bash script for printing lines that don't match?

[Peter O'Gorman]

diff(1)?

Peter

On 09/18/2012 12:13 PM, John Lange wrote:
> I think I've asked this in the past but try as I might I can't
> remember what the answer was or figure out how I solved it before.
>
> I have 2 files that are nearly identical and I need to know which
> lines in the two files do _not_ match.
>
> I can think of some relatively complex loops with grep etc. which
> would probably work (for every line in file A, grep in file B etc.)
> solve the problem but I'm hoping for something more elegant.
>
> I thought at first that perhaps "join" would do it but even though it
> will provide left and right joins, there is no way to prevent it from
> outputting the matching lines.
>
> Any ideas?
>
> John
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