A file or directory that has an associated reparse point, or a file that is a symbolic link. Nonzero data is allocated on disk, and non-meaningful data (large strings of data composed of zeros) is not. A sparse file has an attribute that causes the I/O subsystem to allocate only meaningful (nonzero) data. The OS will prefer cache memory for files marked as temporary. A file that is being used for temporary storage. This pseudo attribute is considered to be set if all other attributes (including the extended attributes) are reset. A file that does not have other attributes set. Applications typically use this attribute to mark files for backup or removal. A file or directory that is an archive file or directory. A file or directory that the operating system uses a part of, or uses exclusively. It is not included in an ordinary directory listing. This attribute is not honored on directories. Applications can read the file, but cannot write to it or delete it. File attributes can be read with FSUTIL usn readdata filename.extĬonstants - the following attribute values are returned by the GetFileAttributes function: Attribute PS C:\> Get-childitem D:\Data -recurse | ForEach-Object -process Extended AttributesĮxtended Attributes are only available on NTFS volumes. The temporary attribute can be removed by using PowerShell to subtract 0x100: Temporary attributeĭFSR will not replicate files if they have the Temporary attribute set. The MSBACKUP, RESTORE, and XCOPY commands use these Archive attributes, as do most 3rd party backup solutions. If the (A) flag is present - the file is new or has been changed since the last backup. The (A) flag is automatically updated by Windows as the file is saved. The Archive attribute (A) is used to mark files that have changed since they were previously backed up. The System attribute is used by Windows to determine that a folder is a special folder, such as My Documents, Favorites, Fonts, etc. So the following command would affect only files, not directories:ĭetect whether a path points to a file or a directory by reading the Extended Attribute for 'Directory' (as listed below). It does not actually set the attribute on the folder itself.Ī directory, you must explicitly specify the directory name you cannot use The Read-only attribute of a folder can be set or cleared in Windows Explorer as a fast method of setting/clearing the Read-only attribute of all files within the folder. The Name of a folder can be changed but that is a rename operation not an edit of the contents. This is because a unlike a file, a folder object does not contain any content that can be edited. The Read-only attribute (R) does not apply to a folder. You can display or change some attributes for a directory/folder. You can use wildcards (? and *) with the pathname parameter to display or change the attributes for a group of files. If a file has the System or Hidden attribute set, you must clear that attribute before you can change any other attributes with ATTRIB. If a file has both the Hidden and System attributes set, you can clear both attributes only with a single ATTRIB command.įor example, to clear the Hidden and System attributes for the RECORD.TXT file, type: Hidden and System attributes take priority. In older versions of Windows, Explorer would display 'p' to indicate a 'sparse' file. Used with just the /S option ATTRIB will quickly search If no attribute is specified attrib will return the current attribute settings. The numeric values can be used when changing attributes with VBS/WSH P Pinned Attribute (Windows 10) This refers to the "Always available on this device" setting for OneDrive files. N Normal (0: cannot be used for file selection) L : Work on the attributes of the symbolic link versus the target of the Symbolic link. S : Search the pathname including all subfolders.
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