5. Permissions

5.1. Understanding Permissions

Table 5.1. Understanding Permissions

Permission

Octal

Binary

Description

0

000

Cannot read, execute or modify

–x

1

001

Can execute

-w-

2

010

Can write (modify)

-wx

3

011

Can modify and execute

r–

4

100

Can read

r-x

5

101

Can read and execute

rw-

6

110

Can read and write

rwx

7

111

Can read, write and execute

5.2. Changing Permissions

5.2.1. chmod

5.2.2. chown

5.2.3. chgrp

5.3. UMASK

5.4. Sticky bit

5.5. ACL