Updating a file random access

Updating a file random access

The structure and logic rules used to manage the groups of information and their names is called a "file system". Each one has different structure and logic, properties of speed, flexibility, security, size and more.

procfs) or are merely a mapping into a different file system used as a backing store.This results in unused space when a file is not an exact multiple of the allocation unit, sometimes referred to as slack space.For a 512-byte allocation, the average unused space is 256 bytes.Choosing an allocation size that is too small results in excessive overhead if the file system will contain mostly very large files.File system fragmentation occurs when unused space or single files are not contiguous.

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A filename (or file name) is used to identify a storage location in the file system.

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