The interview was arranged by a staffing agency.

The interview comprised a written test for 75 minutes and a group interview.

The test had multiple-choice questions mainly in C and Perl. I also had to write logical programs, and some analytical questions.

Then, I went on to meet a group of two people who asked me about my past experience.

Next, I met another group of two people who asked me some detailed questions related to my technical experience.

Finally, I met the Hiring Manager, who told me that the interviewers were impressed with my answers.

Two days later, I got a call saying that I was selected. There was no negotiation in salary because I went through an agency.

Write a program in Perl to find the list of words in a text file and their counts.