> Example file contains:
> 
> aabbcc
> ddeeff
> gghhii
> jjkkll
> 
> Output:
> 
> 2: hh
> 

Thanks a lots!
Ruby script really is a great script!
By the way, may I know that is there any function like e.g. left(line, 
3), right(line, 2) and mid(line, 1, 4) to extract letter from a line, 
please?
e.g.
mid(gghhii,3,2) return hh
left(gghhii,3) return ggh
right(gghhii,3) return hii

Thanks!
Oscar

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