UMBUTU LINUX ASSIGNMENT HELP.

Please develop the two BASH scripts, you can test them on your environment.

Current version of Bash for upper to lower and lower to upper, check out document. latest version has changed.

Problem 1) Write a script called doadd that will take 3 user entered numbers as integers and perform either a sum or average based on the users choice. The data is to be read through prompts and the results are to be displayed.

Problem 2) Write a addDir that will add to the PATH environment variable one or two directory paths using command line arguments. Make sure to test your script with the source command.