> I thought i could use sed to change a particular line number but i dont see
> that in the man page, i am trying to change a value from line number 6

% cat foo
Hello line 1
Hello line 2
Hello line 3

# To change just line 2
% sed '2s/Hello/There/'
Hello line 1
There line 2
Hello line 3

# To change line 2 and onwards
% sed '2,$s/Hello/There/'
Hello line 1
There line 2
There line 3

It's that simple :-)

-- 

rgds
Stephen
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