- Read - Denoted as r, files with read access can be displayed to the user.
- Write - Denoted as w, files with write access can be modified by the user.
- Execute - Denoted as x, files with execute access can be executed as programs by the user.
Three types of user group:
- User - The owner of the file.
- Group - Other files which are in the same folder or group.
- World - Everyone else.