Workbook 4 File Ownership and Permissions: Chapter 6: Controlling Default Permissions: umask

Question 1

What is the default mode of newly created
(i) regular files
and
(ii) directories?

Answer 1

(i) 664 (rw-rw-r–)

(ii) 775 (rwxrwxr-x) [38]

Question 2

What is the kernel’s global default for regular files?

Answer 2

666 (rw-rw-rw-) [39]

Question 3

What is the kernel’s global default for directories?

Answer 3

777 (rwxrwxrwx) [39]

Question 4

Give the command line to view your current umask value.

Answer 4

umask

Question 5

Give the command line to change the umask value to 044

Answer 5

umask 044

Question 6

You want a different umask than the bash shell’s default. Which file do you modify to automatically change the bash shell’s umask every time you log in?

Answer 6

~/.bashrc