1. Answer the questions below. a. What are three user categories associated with the file/directory permissions. b. List the 3 file permissions (in single character format) in Linux with the actions they allow? c. What does the below permissions (in octal format) allow and to whom? 777,755,644 Note: In case a particular allowed/disallowed action differ for files and directories, mention it. 2. Using Linux commands, unzip the DFSC2316Assign2Material.zip and extract the content to a directory named "Assignment2" and change the control to the directory. 3. Inside the directory "Assignment2", a. Create a file called "testFile1.txt" and write the bellow sentence into the created file. "Hello, created this file for Assignment 2! ". b. Change permissions of the file so that only you(owner) can read and write the file. 4. Find all files with the extension .txt, that are present in the directory "Assignment2" and all its subdirectories, that has been accessed within the last 10 minutes. Change the accessed date of those file(s) to a date which is 5 days older than the actually accessed date. Note: Make sure to either create or access the txt file in question 3 within 10 minutes. 5. Find all files with their names beginning with 'Digital' and whose size is greater than 55KB, in directory Assignment 2 and all its subdirectories. 6. Find only the files that are less than 55 KB, but they should not have 'Digital' or 'digital' as the starting of their filenames, in directory Assignment 2 and all its subdirectories