Absolute or Numeric Changing file permissions Mode

Absolute or Numeric Mode

In this mode, file permissions are not represented as characters but a three-digit octal number.
The table below gives numbers for all for permissions types :

Number	Permission Type	Symbol
0	No Permission	- - -
1	Execute	- - x
2	Write	- w -
3	Execute + Write	- w x
4	Read	r - -
5	Read + Execute	r - x
6	Read + Write	r w -
7	Read + Write + Execute	r w r

 
Using of chmod command :

In the above-given terminal window, we have changed the permissions of the file 'sample to '764'.

Numeric file permission Mode

'764' absolute code says the following :
• Owner can read, write and execute
• Usergroup can read and write
• World can only read
This is shown as '-rw xrw -r-'