Unix/Linux 1. Use screen shots or video to demonstrate the before and after file permissions of a file to be changed-you may change the file permissions to anything you would like. 2. What does the below command do? 3. Use screen shots or video to locate, set and remove the setgid bit? 4. Match: a. $ su guest c date b. important OS tasks c. $ su p guest d. kill e. background f. kill all g. variable preserve the current environment sends a signal to programs to terminate runs without user intervention; ex monitoring scheduling, and user notification run a specific command in another user account with output displayed in current login session used for multiple processes using a unique identifier, stores data in a memory location respond to user, management memory and devices 5. Make screenshots of: 1) all running processes on your system; 2) an interruption of a process, and 3) a process put into the background Scripting: 6. Create 2 files in Unix in 2 different directories, then create a script to compare them and fetch common words between these 2 files. Print them on the screen and also redirect the output to a file. 7. Create a script that asks the user to provide a Fahrenheit temperature and then convert that temperature to Celsius. Formula: C=(F32)5/9. The temperature should be reported as both a whole number and a decimal value. 8. Create a script that when run must utilize a parameter of the user's favorite food. The script should reject the user's food until they run the script with the correct choice of "chocolate"..