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compare / difference between sub-sections of files

 
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# 1  
Old 11-08-2010
compare / difference between sub-sections of files
Hi there,

I'm sure this question has been asked many times but I can't find any posts with information.

How can I check the differences between say lines 20 - 200 in file1 and lines 420 - 600 in file2?

Thanks in advance for any help!

js
# 2  
Old 11-08-2010
Not an one liner, but, you can do this in two steps.


# extract the required lines, and save in tmp file.
Code:
 
sed -n 20,200p file1 > file1.tmp

# extract the other required line, and diff.
Code:
 
sed -n 420,600p file2 | diff file1.tmp -

Hope it helps.
This User Gave Thanks to thegeek For This Post:
js8765
# 3  
Old 11-08-2010
In bash/ksh93 you can do this in one command:
Code:
diff <(sed -n 20,200p file1) <( sed -n 420,600p file2)

This User Gave Thanks to Scrutinizer For This Post:
js8765
 
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