Hi I have two files ,the first data.txt which contain the following: 
me.pl~23~note~345~sente
you.pl~25~warning~345~sente
he.pl~21~note~345~sente
she.pl~123~warning~345~sente
they.pl~233~warning~345~sente
them.pl~26~note~345~sente

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where the fist number appear in each line is a line number in that code now in my second file which is lineChanges.txt , I have the following 
you.pl   24-28
they.pl  36
them.pl  44-49
you.pl   234
77

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which are lines that changed in a code, 24-28 means 24 to 28 ... so what I need to do is reading from the lineChanges.txt file each line and see if the .pl file appears in the first file data.txt , if it does then I want to see if the lines number matches or in the same range and it is a warning , if it match and it is a warning then I want to get the hole line and send it to a file . example you.pl appears in both files the lines for you.pl in the lineChanges.txt are 24 to 28 and in data.txt is 25 , line 25 which is in the range of 24-28 appear and it is a warning so that is what I am looking for so I copy the hole line 
you.pl~25~warning~345~sente

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to an output file .... can someone tell me how to do that or give me a hint :) thanks

In reply to Reqex from two files and compare by DS

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