Marc Perkel wrote:
>>  cat fileA fileB | sort | uniq -u > fileC
>>   
> 
> Unfirtunately no. file B has addresses mot in file A.

Just do fileB twice then :)

cat fileA fileB fileB | sort | uniq -u > fileC

That guarantees that items from fileB will never be uniq...

-- 
Dennis Skinner
Systems Administrator
BlueFrog Internet
http://www.bluefrog.com

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