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Several operating systems provided a set of modifiable file characteristics that could be accessed and changed through a low-level system call.For example, as of release MS-DOS 4.0, the first six bits of the file attribute byte indicated whether or not a file was read-only (as opposed to writeable), hidden, a system file, a volume label, a subdirectory, or if the file had been "archived" (with ...
Most file systems include attributes of files and directories that control the ability of users to read, change, navigate, and execute the contents of the file system. In some cases, menu options or functions may be made visible or hidden depending on a user's permission level; this kind of user interface is referred to as permission-driven.
(User and System) Compressed: Read-only attribute for files compressed using HFS+ Compression In these systems, the chflags and ls commands can be used to change and display file attributes. To change a "user" attribute on a file in 4.4BSD-derived operating systems, the user must be the owner of the file or the superuser; to change a "system ...
By default, both the Trash and Spam folders empty automatically to keep your account tidy. These settings are set systemically and can't be changed. • Trash deletion frequency - Trash is deleted after 7 days.
Another precautionary measure is to mark important files as read-only. Many operating systems will warn the user trying to delete such files. Where file-system permissions exist, users who lack the necessary permissions are only able to delete their own files, preventing the erasure of other people's work or critical system files.
A browser's cache stores temporary website files which allows the site to load faster in future sessions. This data will be recreated every time you visit the webpage, though at times it can become corrupted.
Change what happens when you move or delete an email in AOL Mail Take control of where you'll end up after deleting or moving a message in AOL Mail. Choose to go back to the original folder, the next message, or the previous message after moving the email.
In DOS systems, file directory entries include a Hidden file attribute which is manipulated using the attrib command. Using the command line command dir /ah displays the files with the Hidden attribute. In addition, there is a System file attribute that can be set on a file, which also causes the file to be hidden in directory listings.