A record of an open access to a file, including its current position and access mode. Each file descriptor reaches one open file description, but several file descriptors can share it. Separately opening the same ordinary file creates separate open file descriptions with independent positions while still reaching the same inode. Thus file descriptors, open file descriptions and hard links have different counts. [ref]
// Target: computer-science.bigb
The logical system-wide collection of open file descriptions. Each description represents an opening, including access mode, current file offset and a reference to the underlying file. Independent opens of the same file normally create different descriptions, whereas descriptor duplication can make multiple file descriptors share one description. A table is an abstract organization here, not a requirement that all entries occupy one fixed array.

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  1. File descriptor
  2. Process (computing)
  3. Operating system
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