Write a linux bash script

Create a bash script that contains the following menu options, detailed below. The script must include a main menu and 3 submenus. The script must contain at least one “Case statement” and one or more “IF; THEN; ELSE statements”. The script must request user interaction and input validation. Lastly the script must not exit until the user selects the exit option. The script will account for 75 points. User/Group Tool 1. List User/Group Information a. List all Non-System Users (5 Points) b. List all Groups (5 Points) c. List all Locked Users (5 Points) d. List all Unlocked Users (5 Points) e. Back to Main Menu (3 Points) 2. Add, remove, or modify a User a. Add a User Account (5 Points) b. Remove a User Account (5 Points) c. Rename a User (5 Points) d. Add a User to a Group (5 Points) e. Lock or Unlock a User (5 Points) f. Back to Main Menu (3 Points) 3. Add, remove, or modify a Group a. Add a User Group (5 Points) b. Remove a User Group (5 Points) c. Rename a Group (5 Points) d. Remove a User from a Group (5 Points) e. Back to Main Menu (3 Points) 4. Exit (1 Points)