Access Control

MyLinux Learning Path

Do Linux to learn Linux. Set current directory to: ~/Desktop/. File and group owner is javierma36.

1. Create a txt file (Code1.txt) using touch command. Identify and print separately (user, group, other) the default access control assigned.
2. Create a directory (Delta_Proyect) using mkdir command. Identify and print separately (user, group, other) the default access control assigned.
3. What does it means: xrw access control.
4. Change user access control permissions of Code1.txt to: x-- and try to open the file.
5. What does it means: $ chmod u-x Code1.txt ?
6. What does it means: $ chmod ug+w Code1.txt ?
7. What does it means: $ chmod a+x Code1.txt ?
8. What does it means: $ chmod 444 Code1.txt ?
9. What does it means: $ chmod 111 Code1.txt ?
10. What does it means: $ chmod 222 Code1.txt ?
11. What does it means: $ chmod 666 Code1.txt ?
12. What does it means: $ chmod 777 Code1.txt ?
13. What does it means: $ chmod 600 Code1.txt ?
14. Is this possible: chmod 777 Code1.txt Delta_Proyect/ ?
15. Imagine that user "alex" exists. Is this possible: $ chown alex Delta_Proyect/ ? Who is the group owner ?
16. Imagine that user "alex" exists. Is this possible: $ sudo chown alex Delta_Proyect/ ? Who is the group owner ?
17. Imagine that user "alex" exists. Is this possible: # chown alex Delta_Proyect/ ? Who is the group owner ?
18. Imagine that user "alex" exists. Is this possible: $ chown alex:alex Code1.txt/ ? Who is the user and group owner now.?
19. Imagine that user "alex" exists. Is this possible: $ sudo chown alex:alex Code1.txt/ ? Who is the user and group owner now.?
20. Imagine that user "alex" exists. Is this possible: # chown alex:alex Code1.txt/ ? Who is the user and group owner now.?
21. Imagine that user "alex" exists. Is this possible: # chgrp alex Code1.txt/ ? Who is the user and group owner now.?
22. Imagine that user "alex" exists. Is this possible: $ chgrp alex Code1.txt/ ? Who is the user and group owner now.?
23. Imagine that user "alex" exists. Is this possible: $ sudo chgrp alex Code1.txt/ ? Who is the user and group owner now.?