finding difference between two large text files

Hello, I'm trying to find the difference between two large text files. I'm using GNU Diff and it works on small files, but not on large files that are above 1gb. Does anyone know of a solution for doing this via C# or of a utility that can compare two large text files and generate an output file that contains the data that is different

Here is a link to the GNU tool:

http://gnuwin32.sourceforge.net/packages/diffutils.htm

Here is my cmd line:

C:\Program Files\GnuWin32\bin>diff -ua c:\logs\file1.txt c:\logs\file2.txt > c:\logs\output.txt

Any suggestions

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finding difference between two large text files

Miguel Carvajal
memory failures when I try to use the utility. Any other suggestions
F.Costa
Hi,

Among a huge list of other tools a great program for programmers and non-programmers Total Commander has binary and text comparisons for files and directories.

http://www.ghisler.com/

Mark
Lukasz Glaz
Visual Studio has a file compare tool, windiff:

...\Microsoft Visual Studio 8\Common7\Tools\Bin\WinDiff.Exe

Or from a command prompt there are a couple of programs to compare files, although I've never actually used them myself: FC and COMP.

Type FC / or COMP / from a cmd prompt to get more info
Disk4mat

Hi,

Here is how to use windiff.exe: http://support.microsoft.com/default.aspx/kb/159214

Thanks
George Homorozeanu

Hi,

We can make such a tools ourselves with C#, anyway.

To begin with how to read big files: http://samples.gotdotnet.com/quickstart/howto/doc/LargeReadWrite.aspx/

Then what left is comparison thing

Thank you
finding difference between two large text files

Answer this question

finding difference between two large text files

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Visual C#

finding difference between two large text files

finding difference between two large text files

Miguel Carvajal

F.Costa

Lukasz Glaz

Disk4mat

George Homorozeanu