Hi Grial,
Thanks for your prompt and quick response.

The script works for comparing two cols i.e., col 3 and col4 of two files.

If i try to try to compare only col3 of two files,
I am getting redundant records.

Eg:
My File1 consists of 100 records and
file2 consists of 238 records.If i try to compare,file1 and file2 I got 116 records as my o/p
in the console.Can u suggest me,how to rectify this.