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/dev/null

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<operating system> The Unix software device that discards any data written to it and supplies zero bytes of data when read. /dev/null is occasionally useful in situations where a file is required but no relevant file exists.

For example, if a program produced lots of output for debugging purposes but that output was not required when the program was deployed in a production environment and writing it to a file would waste disk space then the output could be written to /dev/null.

The term is used for a notional "black hole" in any information space. For example, a message, might end, "Kudos to rasputin@kremlin.org, flames to /dev/null".

See bit bucket.

[Jargon File]

(2015-01-28)

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