I need a perl script to automate this rather using excel or doing manually
Perlmonks is not a "write my code for me" service.
What have you tried and where did you have problems?
CountZero
A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James
My blog:
Imperial Deltronics
