Shell Programming and Scripting

source_file.csv file contains

Customer1.txt
Product1.txt
Sales.txt
Emp.txt
Dept.txt

while source_file.csv|read line
do
       cat $line  # I am applying some logic 
done

#!/bin/ksh

while read line
do
  echo $line
  # execute your script here
done < source_file.csv

source_file.csv  contains the 

1,Customer1.txt
2,Product1.txt
3,Sales.txt
4,Emp.txt
5,Dept.txt

cat source_file.csv | awk -F"," '{print $2}' |grep -v ^$|
while read line
do
echo $line
#some other logic present here
done