using c++ unix

Task 1. (50 points)

Implement your own version of a command to display a file that should be almost same as the UNIX cat command that displays a requested file on the screen. Name your command as "show" that should have the following syntax:

show file_name

that displays the file called file_name and reports with an appropriate message if the file name does not exist or cant be opened.

You need to create a text file name "file1" for at least 30 continuous character for testing purposes. Also, you need to upload the snapshot of the demo of your program in console of Linux. Only zip the file to be .zip. That is in the folder Lab 3, you only need to have 5 files after compile: show.c body.c show body file1 snapshot(.jpg,.bmp....). (body is the one for task 2)

Task 2. (50 points)

Modify the above program to implement your own version of UNIX command called body like UNIX commands head or tail. Your command body should print from m^th line to n^th line from the given file. It should have the following syntax:

body m n file_name

The command reports with an appropriate message if the file name does not exist or cant be opened. If you don't know how to do the m^th line to n^th line to get the full scores, you can do the m^th character to n^th character instead, with 80% of the score.

You need to create a text file name "file1" for at least 10 lines for testing purposes. Also, you need to upload the snapshot of the demo of your program in console of Linux. Only zip the file to be .zip. That is in the folder Lab 3, you only need to have 5 files after compile: show.c body.c show body file1 snapshot(.jpg,.bmp....).