File is an organised collection of related records. File management is one of the tasks of the operating system. File management is concerned with the logical organisation of information, its security and manipulation. Information is grouped as files and files are grouped under various directories. Files are the leaf nodes of a hierarchial tree structure. Directories are subdivided into sub-directories. File management also includes security features like access rights (read, write, execute and a combination of them). File management also include the physical organisation of files and managing the file structures. File structure can be sequential, indexed, index-sequential etc.
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