Task 0, changing permission of current user to betty Task 1, printing the username of the current user Task 2, printing out all groups current user is in Task 3, changing owner of file to betty Task 4,Creating empty file Task 5, adding executing power to owner of the file Task 6, giving multiple permission to a file Task 7, including everybody in file hello Task 8, allowing other user permission Task 9, allowing owner and other users Task 10, setting new file with the mode of existing file Task 11, executive to alll directory excluding regular files Task 12, creating new dir with permission 751 Task 13, changing group owner to school