Shell Programming and Scripting

#!/bin/bash
 
>extra.txt
>mismatch.txt
while read sLine; do
    OFS="$IFS"
    IFS="Ç"
    sTab= ${sLine} ;
    tLine="${egrep "^"${sTab[0]} file2.txt}"
    if [ -z "$tLine" ]; then echo "$sLine" >>extra.txt; IFS="$OFS"; continue; fi
    tTab= ${tLine} ;
    for (( i = 1 ; i < ${#sTab[@]} ; i++ )); do
        [ "${sTab[$i]}" = "${tTab[$i]}" ] || echo "${sTab[0]}|$i|${sTab[$i]}|${tTab[$i]}" >>mismatch.txt
    done
    IFS="$OFS"
done <file1.txt
echo "Number of Extra records in Source file : $(cat extra.txt|wc -l)"
cat extra.txt
echo "Number of mismatches : $(cat mismatch.txt|wc -l)"
cat mismatch.txt

awk 'BEGIN {FS="Ç";OFS="|"}
    {getline lf1 < "file1"
      if (lf1!=$0) {b=split(lf1,a)
         for (i=1;i<=b;i++) if (a[i]!=$i) print a[i],$i,NR,i}
    }' file2

29123975|2923975|3|1

diff file1 file2
3c3
< 29123975Ç2012-05-29Ç35310126Ç00000000000469744804Ç00010Ç20Ç390ÇÇÇÇF
---
> 2923975Ç2012-05-29Ç35310126Ç00000000000469744804Ç00010Ç20Ç390ÇÇÇÇF
7d6
< 29123979Ç2012-05-29Ç35310130Ç00000000000469744903Ç00010Ç20Ç401ÇÇÇÇF
8a8
> 29123981Ç2012-05-29Ç35310132Ç00000000000469744929Ç00010Ç20Ç390ÇÇÇÇF

(diff -e file1 file2; echo w)|ed file1