Attributes and Permissions
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To view the properties of a file or folder, right click it in Explorer and select Properties from the popup context menu. Figure 144 shows the properties for the Program Files folder (found in the root of the C: drive).
At the bottom of the dialog are checkboxes relating to the attributes of this folder: Read only, Hidden and Archive. There is a fourth attribute that does not appear hear System File. This attribute is usually only set by Windows on specific files, however it can be set manually using the attrib command (discussed later in the book).
The Read Only attribute means just that - this file or folder can be read, but not changed in any manner. The Hidden attribute is typically set on the files that we do not need to access when viewing a directory. Earlier in the book, we set the Explorer options to Show all files. Without this option set, files with the hidden attribute set are not displayed in Explorer. The Archive attribute is set by the system to indicate that the file has changed recently and should be included on the Administrators next backup of the system. Typically, this is set when a new file is created or if a user modifies an existing file, for example by updating a document. System files are the files that relate to the core workings of the Operating System. These files might be driver or similar types of files. Dynamic Link Library files (.DLL) are some of the most common.
These four attributes can be remembered by the mnemonic RASH Read only, Archive, System, and Hidden.
Clicking on the Sharing tab displays the dialog in Figure 145.
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