Linux Command Line Tutorial For Beginners 17 - file permissions, symbolic permissions and chmod

I this video web will learn about file permissions in Linux. We will talk about how chmod command can be used to change the file permissions .
File security and Permissions
A file is owned by the user who created it
That user can then specify who can read, write and execute that file
A file when created can be accessed in three ways:Reading, Writing, Executing

Permissions of a file are grouped into three different types:
Owner
Group
Other

The general format of the chmod command is
$chmod [who] operator [permission] filename
Who means :
u the user permission
g the group permission
o the other permission
a means all (user, group and other)
Operator means:
+ add a permission
- take away a permission
= set permission
Permission means:
R read permission
W write permission
X execute permission
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