Hi,
I have two big .txt files.and i need to compare those two files and redirect it into some other file.
If any body wants to resolve this issue then i can send the two text files.
Need some quick responce.

Thanks,
prakash

please check "man cmp". Provide manual for compare

Look at your man pages for "diff", but basically :

Hi,Thanks for the quick reply.In those two commands we can have the difference.But my files are very big in size and i need the comparison which will show only the difference part.for example:Test1-Hi i am prakashTest2-Hi i amThen the required shell script should show the diffrence as praksh.But the diff command will show both the files and comparison.as my files are very big the redirected file is even bigger.There fore i need a generalized shell script which will workwaiting for the response.ThanksPrakash

look into 'man comm'

AIX and HP-UX have .

There are so many ways to skin this cat, but my favorite is the stl. If you use two custom streams, and tweak your buffers to the rightt size, you can do just about any kind of file comparison you can imagine, and get pretty good speed out of it.
I have a sample if you're interested. Here's an example of the streams (not completely tested).

WebKruncher.com/speedstreams.h - It's used like any typical file streams, just create and call getline 'till eof or read in chunks for a binary comparisons.
-Jmt