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→File Permissions
On the other hand, you can change which '''user''',<br>existing '''same group members''' or existing '''other group members''' can or cannot access a directory or regular file.
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Permissions act like a two-layered defence:<br>First, the permissions of a '''directory''' that <br>contains regular files, and second, permissions of the '''regular files''' themselves.
<table align="right"><tr><td>[[Image:directory-permissions.png|thumb|right|350px|]]</td><td>[[Image:file-permissions.png|thumb|right|350px|]]</td></tr></table>
