Know any file compare utility for chunks of text?

Posted by Belun on Super User See other posts from Super User or by Belun
Published on 2011-11-15T17:37:10Z Indexed on 2011/11/15 17:55 UTC
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Is there any file-compare utility-software that can help me compare chunks of text from two text files ?

As in, I want to know what chunks of text that are in one file can be found again in the second file. What I need to do is more like a 'compare and search' operation, not just a compare line by line.

I need this for finding common errors in application logs. Eg., I have a Java application and logs from two different days. I want to find out which stack-traces (that are actually chunks of text inside a text file) are common to both days.

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