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chattr is the command in Linux that allows a user to set certain attributes of a file. lsattr is the command that displays the attributes of a file.. Most BSD-like systems, including macOS, have always had an analogous chflags command to set the attributes, but no command specifically meant to display them; specific options to the ls command are used instead.
(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 ...
The original File Allocation Table file system has a per-file all-user read-only attribute. NTFS implemented in Microsoft Windows NT and its derivatives, use ACLs [1] to provide a complex set of permissions. OpenVMS uses a permission scheme similar to that of Unix. There are four categories (system, owner, group, and world) and four types of ...
The r, w, and x specify the read, write, and execute access respectively. The first character of the ls -l display denotes the object type; a hyphen represents a plain file. The script findPhoneNumbers.sh can be read, written to, and executed by the user dgerman; read and executed by members of the staff group; and only read by any other users.
File locking is a mechanism that restricts access to a computer file, or to a region of a file, by allowing only one user or process to modify or delete it at a specific time, and preventing reading of the file while it's being modified or deleted.
The uses of extended attributes in Be-like systems are varied: For example, Tracker and OpenTracker, the file-managers of BeOS and Haiku respectively, both store the locations of file icons in attributes, [8] Haiku's "Mail" service stores all message content and metadata in extended file attributes, [9] and the MIME types of files are stored in ...
rm (short for remove) is a basic command on Unix and Unix-like operating systems used to remove objects such as computer files, directories and symbolic links from file systems and also special files such as device nodes, pipes and sockets, similar to the del command in MS-DOS, OS/2, and Microsoft Windows. The command is also available in the ...
In computer technology, read-only can refer to: Read-only memory (ROM), a type of storage media; Read-only access to memory using memory protection; Read-only access to files or directories in file system permissions; Read-only access for database administrators in database system permissions