Re: comparing two files, with known variations

in reply to comparing two files, with known variations

Hi Sathiyamoorthy,

I don't know is there any tools for that. Since there are only 2500 lines, we can do the job in a normal way.

1. read one line at a time using 'while' or read and store in 2 arrays
+ line by line. (open, while, @file1, @file2, '<')
2. 'split' the line with '$#$' in both the arrays/lines. (split, @arra
+y1, @array2)
3. In a subroutine compare first, second and  third field of the array
+1 with first, second and third field of the array2 respectivey, for t
+he difference.
(for time comparison you can use Date::Manip or Date::Calc module) (&s
+ubroutine)
4. write the result in a file to create a report. (open, '>')
[download]

Prasad

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Re^2: comparing two files, with known variations by sathiya.sw (Monk) on Jan 07, 2009 at 06:51 UTC
fine on your reply. But i am interested in knowing about the tools / modules to do this Job. And also, it is not 2,500 it is 25,000 minimum. Thanks for your reply, hence i got some modules for comparison, and other ideas. Sathiyamoorthy	[reply]
Re^3: comparing two files, with known variations by targetsmart (Curate) on Jan 07, 2009 at 07:11 UTC
Hi, I feel that your worry is about 25000 lines of data into hash or into perl's memory!. If my guess is correct, you can use DBM::Deep. But since the data will be stored in a file, it will not be as quick as normal hash.	[reply]
Re^3: comparing two files, with known variations by apl (Monsignor) on Jan 07, 2009 at 12:33 UTC
Use the nix sort and diff utilities. As far as field separator is concerned, it looks like your file is fixed format; you could just use a space... Revised:* Sorry, I realize that doesn't handle your definition of time identity.	[reply]

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