Word:

file descriptor

(programming, operating system)file descriptor - An integer that identifies an open file within a process. This number is obtained as a result of opening a file. Operations which read, write, or close a file would take the file descriptor as an input parameter.

In many operating system implementations, file descriptors are small integers which index a table of open files. In Unix, file descriptors 0, 1 and 2 correspond to the standard input, standard output and standard error files respectively.

See file descriptor leak.
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Filbert Nut
Filch
Filcher
Filchingly
File
file allocation table
File Attach
file away
File blank
file cabinet
file clerk
File closer
File Composition
file compression
file control block
File cutter
-- file descriptor --
file descriptor leak
file extension
File firing
file folder
file in
File leader
File marching
file name
file name extension
file out
File Request
File Separator
file server
File Service Protocol
file signature
file system
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