File Permission in Linux

File permission in octal format

0	No permissions
1	Execute only
2	Write Only
3	Write and Execute
4	Read Only
5	Read and Execute
6	Read and Write
7	Read, Write and Execute

When I execute ls -l command I am getting the below result.

here 1               - is the no. of file
       imocha       - is the owner of the file
       centos        - is the users group
       114            - is the size of the file in bytes
       Nov 18       - is the file creation date
       21:19          - is the file creation time
       process.sh  - is the name of the file
       rw-rw-r--   - is the permissions of the file

     the line is begin by a dash(-) sign it is the indication of normal file, it will be d in case of directory (e.g. drw-rw-r--)


 the permissions is divided into three parts group by three characters each.
 first there characters i.e. rw- it indicates that imocha can read and write but not execute.
 second three characters i.e. rw- it indicates that users group can read and write but not execute.
 last three characters i.e r-- it indicates that everyone have privilege to read only