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In computing, a file system or filesystem (often abbreviated to FS or fs) governs file organization and access. A local file system is a capability of an operating system that services the applications running on the same computer. [1] [2] A distributed file system is a protocol that provides file access between networked computers.
In computing, a command is a directive to a computer program to perform a specific task. It may be issued via a command-line interface or as input to a network service as part of a network protocol, or as an event triggered in a graphical user interface. Specifically, the term command is used in imperative programming languages.
For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, [1] [2] although the application code is usually executed directly by the hardware and frequently makes system calls to an OS function or is interrupted by it.
The filesystem appears as one rooted tree of directories. [1] Instead of addressing separate volumes such as disk partitions, removable media, and network shares as separate trees (as done in DOS and Windows: each drive has a drive letter that denotes the root of its file system tree), such volumes can be mounted on a directory, causing the volume's file system tree to appear as that directory ...
In computing, a directory is a file system cataloging structure which contains references to other computer files, and possibly other directories. On many computers, directories are known as folders , or drawers , [ 1 ] analogous to a workbench or the traditional office filing cabinet .
A computer file is a resource for recording data on a computer storage device, primarily identified by its filename. Just as words can be written on paper, so too can data be written to a computer file. Files can be shared with and transferred between computers and mobile devices via removable media, networks, or the Internet.
The File menu is a graphical control element formerly common to most file-handling computer programs, but more recently often replaced by a toolbar or ribbon. It often appears as the first item in the menu bar , [ 1 ] and contains commands relating to the handling of files , such as open, save, print, etc. [ 2 ] It may also contain a list of ...
The name is derived from its function to (con)catenate files (from Latin catenare, "to chain"). [ 1 ] [ 2 ] It has been ported to a number of operating systems. The other primary purpose of cat , aside from concatenation, is file printing — allowing the computer user to view the contents of a file.