Changing file permissions

The following are the commands for changing file permissions:

To check the file permission, enter the following command:

    $ ll file_name  

The file permission details are as seen in the following diagram:

In the preceding diagram, as we can see, permissions are grouped in owner-user, group, and other users' permissions. Permissions are of three types–read, write, and execute. As per the requirement, we may need to change the permissions of the various files.