Re: Compare files, save differences

On Mon, Apr 21, 2014 at 5:14 AM, Jeri Raye <jeri.raye@gmail.com> wrote:

Hi,

I have a file allwords.txt.
And I have another file mywords.txt

How can I filter the differences, and safe them in another file called difwords.txt?

Example:
+------ allwords.txt -------+
James
Richard
Anna
Claude
Ben
+------------+

+------mywords.txt-----+
Anna
Ben
+-------------------+

This should then make the following file

+------difwords.txt-----+
James
Richard
Claude
+-----------+

It has been a long time since you posted this. I am not sure if you found the solution already. But since this is a problem I frequently encounter, I made a perl script to solve it. You can download it from https://sourceforge.net/p/rajuutils/code/ci/master/tree/perl/overlap/ . By default, it operates on two files setA.txt, setB.txt. The output is stored in "out" directory.

For example, with the following input files

rajulocal@hogwarts:~/work/rutils/perl/overlap$ cat setA.txt   James  Richard  Anna  Claude  Ben  rajulocal@hogwarts:~/work/rutils/perl/overlap$ cat setB.txt   Anna  Ben  Jeff  Raju  

Run the script

rajulocal@hogwarts:~/work/rutils/perl/overlap$ ./overlap.pl 

set           count pct

A             5 0.71

B             4 0.57

A or B         7 1.00

A and B       2 0.29

A - B         3 0.43

B - A         2 0.29

notA and notB 0 0.00

storing output files under out directory

The output files are as follows:

rajulocal@hogwarts:~/work/rutils/perl/overlap$ ls out/

out_AandB.txt  out_AorB.txt  out_notAnotB.txt  out_onlyA.txt  out_onlyB.txt

In this case, the file you are interested in is out_onlyA.txt

rajulocal@hogwarts:~/work/rutils/perl/overlap$ cat out/out_onlyA.txt 

Claude

James

Richard

hth

raju

-- 

Kamaraju S. Kusumanchi

http://malayamaarutham.blogspot.com/

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