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→File Permissions
Users that <u>own</u> those ''directories'' and ''regular files'' are referred to as '''users''', users that belong within<br>the <u>same group</u> are referred to as '''same group members''', and those users that<br>do <u>NOT</u> belong to a particular group are referred to as '''other group members'''.
[[Image:directory-permissions.png|thumb|right|350px|Permissions of a '''directory''' that contain subdirectories and regular files.]]
'''NOTE:''' In this course, we CANNOT create groups or assign users to groups in the '''Matrix''' server.<br>Instead, you may learn how to those tasks when or if you take a Unix/Linux administration course.<br>On the other hand, you can change which '''user''', '''same group members''' or '''other group members'''<br>can access or NOT access a directory or regular file.<br><br>
File Permissions consist of '''two-layers''':<br><br>'''First''', the permissions of a '''directory''' that contains regular files, and '''second''', permissions of the ''subdirectories and/or regular files'' within that directory.
