"/dev/null" meaning in All languages combined

See /dev/null on Wiktionary

Proper name [English]

Etymology: From Unix operating systems, where /dev (the Unix directory containing device files) contains a null entry representing no device. Head templates: {{en-proper noun|head=/dev/null}} /dev/null
  1. (computing) A device file, present in Unix and Unix-like operating systems, that discards all data written to it and yields no output. Categories (topical): Computing, Unix Synonyms: dev null, dev-null, devnull Hypernyms: null device, pseudodevice Coordinate_terms: bit bucket, black hole
    Sense id: en-/dev/null-en-name-lugpZQjm Disambiguation of Unix: 94 6 Categories (other): English entries with incorrect language header, Pages with 1 entry, Pages with entries Disambiguation of English entries with incorrect language header: 82 18 Disambiguation of Pages with 1 entry: 78 22 Disambiguation of Pages with entries: 81 19 Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences
  2. (Internet slang, figuratively) Nowhere; often suggests an intent to ignore specific correspondence. Tags: Internet, figuratively
    Sense id: en-/dev/null-en-name-sVLmAtLR

Alternative forms

{
  "etymology_text": "From Unix operating systems, where /dev (the Unix directory containing device files) contains a null entry representing no device.",
  "head_templates": [
    {
      "args": {
        "head": "/dev/null"
      },
      "expansion": "/dev/null",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Computing",
          "orig": "en:Computing",
          "parents": [
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "82 18",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "78 22",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "81 19",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "94 6",
          "kind": "topical",
          "langcode": "en",
          "name": "Unix",
          "orig": "en:Unix",
          "parents": [
            "Computing",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "coordinate_terms": [
        {
          "_dis1": "96 4",
          "word": "bit bucket"
        },
        {
          "_dis1": "96 4",
          "word": "black hole"
        }
      ],
      "examples": [
        {
          "text": "It's possible to suppress the compiler's warnings by redirecting standard error to /dev/null.",
          "type": "example"
        },
        {
          "ref": "1980 October, Luis F. Cabrera, “A Performance Evaluation Study of UNIX”, in Harold Joseph Highland, editor, Computer Performance Evaluation Users Group 16th Meeting (National Bureau of Standards Special Publication; 500-65), Washington: Government Printing Office, page 235:",
          "text": "To avoid problems when running the script, the output of man man was sent to /dev/null instead of sending it to a real terminal. This has the effect of discarding the already formatted text of the retrieved page.",
          "type": "quote"
        },
        {
          "ref": "1993, Stephen A. Rago, UNIX System V Network Programming, Pearson, →ISBN, page 89:",
          "text": "[...] we reserve file descriptors 0, 1, and 2 by opening /dev/null and duplicating the file descriptor returned. /dev/null is a pseudo-driver that forces read to return 0 and write to return as if the entire amount requested had been written. This makes library routines that use file descriptors 0, 1, and 2 harmless.",
          "type": "quote"
        },
        {
          "ref": "2005, Eric Foster-Johnson with John C. Welch and Micah Anderson, Beginning Shell Scripting, John Wiley & Sons, →ISBN, page 263:",
          "text": "Continuing in the Unix tradition of treating everything as a file, you can redirect a command's output to the null file, /dev/null. The null file consumes all output sent to it, as if /dev/null is a black hole star.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A device file, present in Unix and Unix-like operating systems, that discards all data written to it and yields no output."
      ],
      "hypernyms": [
        {
          "_dis1": "96 4",
          "word": "null device"
        },
        {
          "_dis1": "96 4",
          "word": "pseudodevice"
        }
      ],
      "id": "en-/dev/null-en-name-lugpZQjm",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "device",
          "device"
        ],
        [
          "file",
          "file"
        ],
        [
          "Unix",
          "Unix"
        ],
        [
          "Unix-like",
          "Unix-like"
        ],
        [
          "operating system",
          "operating system"
        ],
        [
          "discard",
          "discard"
        ],
        [
          "data",
          "data"
        ],
        [
          "written",
          "write"
        ],
        [
          "yield",
          "yield"
        ],
        [
          "output",
          "output"
        ]
      ],
      "raw_glosses": [
        "(computing) A device file, present in Unix and Unix-like operating systems, that discards all data written to it and yields no output."
      ],
      "synonyms": [
        {
          "_dis1": "84 16",
          "word": "dev null"
        },
        {
          "_dis1": "84 16",
          "word": "dev-null"
        },
        {
          "_dis1": "84 16",
          "word": "devnull"
        }
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    },
    {
      "categories": [],
      "examples": [
        {
          "ref": "1992 September 17, Douglas Meier <dmeier@casbah.acns.nwu.edu>, “Welfare Reform Idea”, in talk.politics.misc (Usenet), message-ID <1992Sep17.064757.551@news.acns.nwu.edu>",
          "text": "Thoughtful discussion and criticism is welcomed, but please send all flames to dev null.",
          "type": "quotation"
        },
        {
          "ref": "1993 December 18, Carmien Stefan <carmien@alumni.cs.Colorado.EDU>, “RLP hosed”, in alt.unix.wizards (Usenet), message-ID <CI7Gt6.DAo@Colorado.EDU>",
          "text": "suddenly the RLP calls form atlanta apparently go to dev null.",
          "type": "quotation"
        },
        {
          "ref": "2004 January 17, Ronald D. Edge <InactiveX666@hotmail.com>, “PayPal pyramid scam”, in news.admin.net-abuse.email (Usenet), message-ID <SDaOb.873$Ly6.642264@newshog.newsread.com>",
          "text": "The email will explicitly state that you cannot reply to the email, it will go to dev null.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Nowhere; often suggests an intent to ignore specific correspondence."
      ],
      "id": "en-/dev/null-en-name-sVLmAtLR",
      "links": [
        [
          "Internet",
          "Internet"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "Nowhere",
          "nowhere"
        ],
        [
          "suggest",
          "suggest"
        ],
        [
          "intent",
          "intent"
        ],
        [
          "ignore",
          "ignore"
        ],
        [
          "correspondence",
          "correspondence"
        ]
      ],
      "raw_glosses": [
        "(Internet slang, figuratively) Nowhere; often suggests an intent to ignore specific correspondence."
      ],
      "tags": [
        "Internet",
        "figuratively"
      ]
    }
  ],
  "word": "/dev/null"
}
{
  "categories": [
    "English entries with incorrect language header",
    "English lemmas",
    "English proper nouns",
    "English uncountable nouns",
    "Pages with 1 entry",
    "Pages with entries",
    "en:Unix"
  ],
  "coordinate_terms": [
    {
      "word": "bit bucket"
    },
    {
      "word": "black hole"
    }
  ],
  "etymology_text": "From Unix operating systems, where /dev (the Unix directory containing device files) contains a null entry representing no device.",
  "head_templates": [
    {
      "args": {
        "head": "/dev/null"
      },
      "expansion": "/dev/null",
      "name": "en-proper noun"
    }
  ],
  "hypernyms": [
    {
      "word": "null device"
    },
    {
      "word": "pseudodevice"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "English terms with quotations",
        "English terms with usage examples",
        "en:Computing"
      ],
      "examples": [
        {
          "text": "It's possible to suppress the compiler's warnings by redirecting standard error to /dev/null.",
          "type": "example"
        },
        {
          "ref": "1980 October, Luis F. Cabrera, “A Performance Evaluation Study of UNIX”, in Harold Joseph Highland, editor, Computer Performance Evaluation Users Group 16th Meeting (National Bureau of Standards Special Publication; 500-65), Washington: Government Printing Office, page 235:",
          "text": "To avoid problems when running the script, the output of man man was sent to /dev/null instead of sending it to a real terminal. This has the effect of discarding the already formatted text of the retrieved page.",
          "type": "quote"
        },
        {
          "ref": "1993, Stephen A. Rago, UNIX System V Network Programming, Pearson, →ISBN, page 89:",
          "text": "[...] we reserve file descriptors 0, 1, and 2 by opening /dev/null and duplicating the file descriptor returned. /dev/null is a pseudo-driver that forces read to return 0 and write to return as if the entire amount requested had been written. This makes library routines that use file descriptors 0, 1, and 2 harmless.",
          "type": "quote"
        },
        {
          "ref": "2005, Eric Foster-Johnson with John C. Welch and Micah Anderson, Beginning Shell Scripting, John Wiley & Sons, →ISBN, page 263:",
          "text": "Continuing in the Unix tradition of treating everything as a file, you can redirect a command's output to the null file, /dev/null. The null file consumes all output sent to it, as if /dev/null is a black hole star.",
          "type": "quote"
        }
      ],
      "glosses": [
        "A device file, present in Unix and Unix-like operating systems, that discards all data written to it and yields no output."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "device",
          "device"
        ],
        [
          "file",
          "file"
        ],
        [
          "Unix",
          "Unix"
        ],
        [
          "Unix-like",
          "Unix-like"
        ],
        [
          "operating system",
          "operating system"
        ],
        [
          "discard",
          "discard"
        ],
        [
          "data",
          "data"
        ],
        [
          "written",
          "write"
        ],
        [
          "yield",
          "yield"
        ],
        [
          "output",
          "output"
        ]
      ],
      "raw_glosses": [
        "(computing) A device file, present in Unix and Unix-like operating systems, that discards all data written to it and yields no output."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    },
    {
      "categories": [
        "English internet slang"
      ],
      "examples": [
        {
          "ref": "1992 September 17, Douglas Meier <dmeier@casbah.acns.nwu.edu>, “Welfare Reform Idea”, in talk.politics.misc (Usenet), message-ID <1992Sep17.064757.551@news.acns.nwu.edu>",
          "text": "Thoughtful discussion and criticism is welcomed, but please send all flames to dev null.",
          "type": "quotation"
        },
        {
          "ref": "1993 December 18, Carmien Stefan <carmien@alumni.cs.Colorado.EDU>, “RLP hosed”, in alt.unix.wizards (Usenet), message-ID <CI7Gt6.DAo@Colorado.EDU>",
          "text": "suddenly the RLP calls form atlanta apparently go to dev null.",
          "type": "quotation"
        },
        {
          "ref": "2004 January 17, Ronald D. Edge <InactiveX666@hotmail.com>, “PayPal pyramid scam”, in news.admin.net-abuse.email (Usenet), message-ID <SDaOb.873$Ly6.642264@newshog.newsread.com>",
          "text": "The email will explicitly state that you cannot reply to the email, it will go to dev null.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Nowhere; often suggests an intent to ignore specific correspondence."
      ],
      "links": [
        [
          "Internet",
          "Internet"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "Nowhere",
          "nowhere"
        ],
        [
          "suggest",
          "suggest"
        ],
        [
          "intent",
          "intent"
        ],
        [
          "ignore",
          "ignore"
        ],
        [
          "correspondence",
          "correspondence"
        ]
      ],
      "raw_glosses": [
        "(Internet slang, figuratively) Nowhere; often suggests an intent to ignore specific correspondence."
      ],
      "tags": [
        "Internet",
        "figuratively"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "dev null"
    },
    {
      "word": "dev-null"
    },
    {
      "word": "devnull"
    }
  ],
  "word": "/dev/null"
}

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This page is a part of the kaikki.org machine-readable All languages combined dictionary. This dictionary is based on structured data extracted on 2024-11-06 from the enwiktionary dump dated 2024-10-02 using wiktextract (fbeafe8 and 7f03c9b). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

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