Re: diff files matching a pattern

[Richard Lyons <richard@the-place.net>]

On Sun, Feb 24, 2008 at 02:21:56PM -0500, Kamaraju S Kusumanchi wrote:

> Let's say I have two directories dir1, dir2 each with 1000 files.
> Of these 1000 files in each directory, there are 50 files named file1.txt,
> file2.txt ... file50.txt. The rest of the files do not follow any pattern
> and are very large in size.
> 
> Now is there any way to compare
> 
> dir1/file1.txt and dir2/file1.txt
> dir1/file2.txt and dir2/file2.txt
> ....
> dir1/file50.txt and dir2/file50.txt

Something like:

#!/bin/bash
myday=`date +%y%m%d`
outfile="diff-check-$myday"
for f in `ls $1` ; do
  if [ -f $2/$f ] ; then
    echo file $f >> $outfile
    echo "----------------" >> $outfile
    diff $1/$f $2/$f >> $outfile
    echo "================" >> $outfile
  fi
done

(untested) but it ought to do it.  Well, it's a starting point. Save it as
~/bin/diff-check where ~/bin is on your path, and chmod u+x.  Call it like this
'diff-check dir1 dir2' and its results will be in the directory from which you
called it.  

HTH


-- 

richard