1. On your linux machine, create a  file emp.txt with 5 employee names. 

2. Change permission of emp.txt to READ only.
   Note: Go through the relevant Linux spoken tutorials on the spoken tutorial website for change permission option.

3. Write a Perl program to open the emp.txt file in WRITE mode and add few employee names to it.

4. Using "eval", print appropriate error message if open/write operation fails.