0- Change user ID

1-Print user ID of current user

2-Print all groups current user is part of

3-Change owner of file

4-Create an empty file

5-Adds execute permission to the owner of the file

6-Adds execute permission to the owner and the group owner and read permission to other users

7-Adds execute permission to the owner, the group owner and other users

8-Permissions: owner - NONE, group - NONE, other users - ALL

9-Permissions: -rwxr-x-wx

10-Set the mode of the file hello the same as olleh

11-Set execute permision to all subdirectories of the current directory for owner group owner and aother users

12- Create directory with permissions 751 Change group owner

13-Change owner and group owner for all files and directories in working directory

14- Change owner and group owner of a file Change the owner of the file only if owned by "guillaume"

15-Script that will play the StarWars IV episode in the termial Create a man page