.bat file to compare two text files and output the difference

Question

I am trying something new that I have done on UNIX successfully but have no idea how to do on windows.

So I save a text file, let\'s say test1.txt and 12 hours later

Answer 1

The Simplest and fastest method is using findstr command it will compare and return the result to new file here the script

findstr /vixg:Z:\misc\test1.txt Z:\misc\misc\test2.txt > Z:\misc\misc\test3.txt


findstr /vixg:<source file> <target file> > outputfile

here

/v   : Prints only lines that do not contain a match.
/i   : Specifies that the search is not to be case-sensitive.
/x   : Prints lines that match exactly.
/g: file   : Gets search strings from the specified file.

Answer 2

You can try something like this:-

  @echo off
   :main
   fc c:\filename r:\filemame > nul
   if errorlevel 1 goto error

   :next
   echo insert next CD
    pause
  goto main

  :error
  echo failed check

From the source

Answer 3

You might want to check this out:

http://gnuwin32.sourceforge.net/packages.html

There are ports of *nix utilities, including one for diff so you won't have to reinvent the wheel.