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An operating system (OS) typically supports one or more file systems. Sometimes an OS and its file system are so tightly interwoven that it is difficult to describe them independently. An OS typically provides file system access to the user. Often an OS provides command line interface, such as Unix shell, Windows Command Prompt and PowerShell ...
In Unix and operating systems inspired by it, the file system is considered a central component of the operating system. [1] It was also one of the first parts of the system to be designed and implemented by Ken Thompson in the first experimental version of Unix, dated 1969. [2]
A filename is a string used to uniquely identify a file stored on this structure. Before the advent of 32-bit operating systems, file names were typically limited to short names (6 to 14 characters in size). Modern operating systems now typically allow much longer filenames (more than 250 characters per pathname element).
CP/M file system — Native filesystem used in the CP/M (Control Program for Microcomputers) operating system which was first released in 1974. DFS – Acorn's Disc filing system. DOS 3.x – Original floppy operating system and file system developed for the Apple II. Extent File System (EFS) – an older block filing system under IRIX.
Native operating system The name of the operating system in which this file system debuted. Partition identificator The partitioning scheme and marker used to identify that a partition is formatted to this file system. Per-file compression Does the file system support real-time transparent compression and decompression of individual files.
Unix-like operating systems often include software and tools that assist in the mounting process and provide it new functionality. Some of these strategies have been coined "auto-mounting" as a reflection of their purpose. In many situations, file systems other than the root need to be available as soon as the operating system has booted.
Source code (e.g., the kernel source code with its header files). /usr/X11R6: X Window System, Version 11, Release 6 (up to FHS-2.3, optional). /var: Variable files: files whose content is expected to continually change during normal operation of the system, such as logs, spool files, and temporary e-mail files. /var/cache: Application cache data.
Temporary (T): The file is used for temporary storage. In DOS, OS/2 and Windows, the attrib command in cmd.exe and command.com can be used to change and display the four traditional file attributes. [3] [9] File Explorer in Windows can show the seven mentioned attributes but cannot set or clear the System attribute. [5]