CHMOD

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CHMOD

For Dummies:

How to do it technically?
Let's say I go to your site through FileZilla (it's an FTP client), I select any file or folder to the site and I click the right mouse button, Pops out a choice, where and there is a CHMOD configuration option. Sufficiently intuitive (see below on the right).

How to set permissions - CHMOD

Only for Unix server.

 User rights 
     

 Group rights 
     

 Rights for all 
     

number code

The most common figures are 777 or 666.
In general, they can take values from 0 to 7.
The calculation is based on the binary system of calculation.
If you write down the numbers, you get:

7=1 1 1
6=1 1 0
5=1 0 1
4=1 0 0
3=0 1 1
2=0 1 0
1=0 0 1
0=0 0 0

As you know, the unit corresponds to the statement (yes),
Zero - ignoring (no).
Now let's define what they claim and ignore these combinations of numbers.
The following order is applied: R W X

R - read
W - write
X - execute

  R W X
7 x x x
6 x x  
5 x   x
4 x    
3   x x
2   x  
1     x
0      

But the numbers are given in the form 777, not 7.

The first digit document master
Second persons belonging to a group
Third any user

Hence, 754 gives the right:

  • The owner will do with him whatever he wants;
  • Group members read and execute;
  • The guest is only read.
The system administrator of the server can change access rights.