Linux Basic Learning -9.4-first knowledge of Linux permissions

1. View Files

===== Read R = 4

2, modify the contents of the file

===== Write w = = 2

3. Permission to run commands/scripts

===== Execute x = 1

= 0

4, Linux permissions classification 9-bit

Master, family, strangers.

rw-r--r--

-rw-r--r--. 2 root root 194 Oct 10:14/etc/hosts

420400400

6 4 4

Rwxr-xr-x

421401401

7 5 5

755

Rwxr-xr-x

Exercises:

1. What does R represent and what is the role?

2. What does W represent and what is the role?

3. What does x mean and what is the role?

Linux Basic Learning -9.4-first knowledge of Linux permissions