File Exercises

How to check who owns a file?
How to check what group a file belongs to?
How to change user that owns a file?
How to change group that owns a file?
What does each permission 1-7 mean?
What permissions should ssh files have?
- 600
What ways can you set the sticky bit?
- chmod u+s , chmod g+s , chmod +t
ACLs
- How to get ACL for a firectory?
  - getfacl $DIR
- How to give a specific user permissions to a directory?
  - setfacl -R -m u:$USER:rwx $DIR
- How to give a specific group permissions to a directory?
  - setfacl -R -m g:$GROUP:rwx $DIR
- How to recursively set a ACL
  - setfacl -R -m …
- How to change ACL for new file that are created
  - setfacl -m d:
umask
- What is the max setting for umask files?
- What is the max setting for umask directories?
- What is the default umask setting
  - 0022