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# 8  
Old 06-30-2008
Quote:
Originally Posted by prakash123
it is also not working.it is only showing the common parts.
once again - go through 'man comm'.
# 9  
Old 06-30-2008
Hi,
comm is not working properly.for example take two small files like

file1.txt--My name is x
My name is Y

file2.txt--My name is


The command or shell script should be like that the result should be

x
Y


Thanks,
Prakas
# 10  
Old 06-30-2008
Hi.

These are often found in Linux systems, but you may be able to find them available on other systems (but I didn't see them on my Solaris system):
Code:
#!/bin/bash -

# @(#) s1       Demonstrate word differences.

echo
echo "(Versions displayed with local utility \"version\")"
version >/dev/null 2>&1 && version =o $(_eat $0 $1) wdiff docdiff lynx
echo

echo " Input file data1:"
cat data1

echo
echo " Input file data2:"
cat data2

echo
echo " Results with wdiff:"
wdiff -n -3 -w "" -x "" -y "" -z "" data1 data2 > t1
lynx -force-html -dump t1

echo
echo " Results with docdiff:"
docdiff --digest --word data1 data2 > t1
lynx -force-html -dump t1

exit 0

Producing:
Code:
% ./s3

(Versions displayed with local utility "version")
Linux 2.6.11-x1
GNU bash 2.05b.0
GNU wdiff 0.5
0.3.2
Lynx Version 2.8.5rel.1 (04 Feb 2004)

 Input file data1:
My name is x
Now is the time
Ernie went for a walk in the garden

 Input file data2:
My name is y
Now in the time
Cookie left his house for a walk along the garden path

 Results with wdiff:

   ======================================================================
   x y
   ======================================================================
   is in
   ======================================================================
   Ernie went Cookie left his house
   ======================================================================
   in along
   ======================================================================
   path
   ======================================================================

 Results with docdiff:

       _____________________________________________________________

     * 1,1

     My name is [DEL: x :DEL] [INS: y :INS]
     Now
         _____________________________________________________________

     * 2,2

     Now [DEL: is :DEL] [INS: in :INS] the time
         _____________________________________________________________

     * 3,3

     the time
     [DEL: Ernie went :DEL] [INS: Cookie left his house :INS] for a walk
         _____________________________________________________________

     * 3,3

     for a walk [DEL: in :DEL] [INS: along :INS] the
         _____________________________________________________________

     * 3,3

     the [DEL: garden :DEL] [INS: garden path :INS]
         _____________________________________________________________

Shell scripting alone is unlikely to satisfy any requirement that has to do with processing individual lines in large files. If you don't have or don't like wdiff or docdiff, then I think you'll need to continue searching, or write something in awk or perl ... cheers, drl
# 11  
Old 06-30-2008
FileKruncher
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
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