[#BloombergLP-bdls-FilesystemUtil-FileDescriptor]
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:mrdocs:

`FileDescriptor` is an alias for the operating system&apos;s native file descriptor &sol; file handle type&period;

== Synopsis

Declared in `&lt;bdls&lowbar;filesystemutil&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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typedef int FileDescriptor;
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