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Compare lines in 2 files

 
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# 1  
Old 11-11-2015
Compare lines in 2 files
I have 2 files with exactly the same information (with header and separated by ";") and what I would like to do is print (for both files!) the columns that are different and also print the "key" column that is equal in the 2 files For example, if

File1:

Code:
key1;aaa;bbb;ccc

key2;ddd;eee;fff

File2:

Code:
key1;aaa;bbb;qqq

key2;ddd;eee;fff

Desired output is: Column 3 is "ccc" in File1 and "qqq" in File2 for key1

I hope it is clear enough. Thanks a lot.
Last edited by vgersh99; 11-11-2015 at 02:01 PM.. Reason: code tags, please!
# 2  
Old 11-11-2015
Try:
Code:
paste -d\; file1 file2 |
awk -F\; '{for(i=2; i<=NF/2; i++) if($i!=$(i+NF/2)) printf "Column %s is \"%s\" in File1 and \"%s\" in File2 for %s\n", i-1, $i, $(i+NF/2), $1}'

Output:
Code:
Column 3 is "ccc" in File1 and "qqq" in File2 for key1

These 2 Users Gave Thanks to Scrutinizer For This Post:
mvalonso RavinderSingh13
# 3  
Old 11-11-2015
It worked just fine!!! Thanks a lot!
# 4  
Old 11-11-2015
Slightly different approach:
Code:
awk '{getline X < f; split (X,Y); for (i=2; i<=NF;i++) if ($i != Y[i]) print "Col", i-1, "is \"" $i "\" in", FILENAME, "and \"" Y[i] "\" in", f, "for", $1  }' FS=";" f=file2 file1
Col 3 is "ccc" in file1 and "qqq" in file2 for key1

These 2 Users Gave Thanks to RudiC For This Post:
mvalonso RavinderSingh13
# 5  
Old 11-11-2015
RudiC's approach is better, because it also reports the file names.. Here is the same approach, the other way around:
Code:
awk -F\; '{split($0,F)} (getline<f)>0{for(i in F) if(F[i]!=$i) printf "Column %s is \"%s\" in File1 and \"%s\" in File2 for %s\n", i-1, F[i], $i, $1}' f=file2 file1

 
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