To become familiar with Perl programs and to see how to interact with  the operating system, write a Perl program that performs the following  tasks:Generate a menu to ask the user for the task that

To become familiar with Perl programs and to see how to interact with  the operating system, write a Perl program that performs the following  tasks:

• Generate a menu to ask the user for the task that he or she would like to see performed.
• The available tasks are as follows:  
  • Show current date and time.
  • Show users currently logged in.
  • Show the name of the working directory.
  • Show the contents of the working directory.
• Prompt the user for the choice, and perform the system command. 

Also, describe how variables in Perl are handled, specifically with respect to the need for declaration and type casting.

• Add the script and the discussion about variables to the project template section "Introduction to Perl."