Can you explain the method of changing file access permission?
There are three parts to consider when creating/changing file access permission.
* File owner’s user ID
* File owner’s group ID
* File access mode to define
These three parts arrange as follows.
* (User permission) – (Group permission) – (Other permission)
Three types of permission can define.
* r – Reading permission
* w – Writing permission
* x – Execution permission
