284:", meaning they do not accept donations. The fictitious person name "Dave (or Devin) Null" is sometimes similarly used (e.g., "send complaints to Dave Null"). In 1996,
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276:"—being jocular ways of saying, respectively: "don't bother sending complaints", "my mail was deleted", and "go away". The
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that discards all data written to it but reports that the write operation succeeded. This device is called
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The null device is also a favorite subject of technical jokes, such as warning users that the system's
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Dev/Null is also the name of an electronic dance music producer and jungle DJ.
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of the incoming data by converting it to a flicker on an internal glowing
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Spam Wars: Our Last Best Chance to Defeat
Spammers, Scammers, and Hackers
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366:
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143:
55:
31:
165:
In programmer jargon, especially Unix jargon, it may also be called the
863:
848:
567:"Single Unix Specification Section 10.1: Directory Structure and Files"
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111:
822:
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371:
302:. Dev/null is also the name of a vampire hacker in the computer game
244:
242:, so one cannot move a whole file or directory into it with the Unix
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The null device is typically used for disposing of unwanted output
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462:"Redirecting Error Messages from Command Prompt: STDERR/STDOUT"
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to see if any errors would occur but without writing any file.
312:
The
Titanium Powerbook G4 Sends other UNIX boxes to /dev/null.
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119:
438:
99:
83:
63:
624:. Bell Telephone Laboratories, Inc. sh (I) (./man1/sh.1).
87:
654:. Bell Telephone Laboratories, Incorporated. mem (IV).
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264:
by Unix programmers, e.g. "please send complaints to
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256:This entity is a common inspiration for technical
251:
912:
404:
397:
38:
27:Device file that discards all data written to it
637:
610:
296:for MSNBC's computer and technology TV series
806:
280:commonly uses the phrase "send donations to
215:for input streams. This is usually done by
813:
799:
184:is described as an empty regular file in
666:"Dev-Team Blog - Donations to /dev/null"
621:UNIX Programmer's Manual, Fourth Edition
543:"about_Automatic_Variables - PowerShell"
306:. A 2002 advertisement for the Titanium
689:
648:UNIX Programmer's Manual, Fifth Edition
540:
221:tar -c -f /dev/null "example directory"
211:of a process, or as a convenient empty
146:immediately. In IBM operating systems
14:
913:
820:
696:. New York: SelectBooks. p. 170.
794:
718:
513:"OpenVMS Programming Concepts Manual"
726:"Image: unixad.jpg, (1094 × 720 px)"
559:
304:Vampire: The Masquerade – Redemption
24:
25:
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154:such files would be assigned in
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534:
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485:Commodore-Amiga, Inc. (1986).
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454:
431:
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320:is already 98% full. The 1995
252:References in computer culture
199:device with modern semantics.
13:
1:
448:
362:Filesystem Hierarchy Standard
142:that reads from it, yielding
138:. It provides no data to any
30:For the electropop band, see
668:. 2015-09-07. Archived from
491:. Bantam Books. p. 12.
268:", "my mail got archived in
7:
926:Unix file system technology
355:
223:can be used to dry-run the
10:
952:
225:TAR file archiving utility
176:
36:
29:
882:
829:
890:Null coalescing operator
874:Null coalescing operator
772:"Dev Null Microjunglizm"
411:
334:reported on an enhanced
202:
37:Not to be confused with
690:Goodman, Danny (2004).
122:operating systems, and
437:The most recent being
424:The most recent being
148:DOS/360 and successors
751:"The FreeBSD Funnies"
466:support.microsoft.com
292:character created by
152:OS/360 and successors
272:", and "redirect to
134:, the equivalent is
106:systems (internally
854:Null object pattern
517:h30266.www3.hpe.com
488:The AmigaDOS Manual
343:efficiently dispose
195:manual describes a
547:docs.microsoft.com
132:Windows Powershell
908:
907:
618:(November 1973).
387:Write-only memory
48:operating systems
16:(Redirected from
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728:. Archived from
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569:. The Open Group
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519:. Archived from
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377:Standard streams
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900:Undefined value
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627:Online at TUHS.
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382:Unix philosophy
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290:virtual reality
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278:iPhone Dev Team
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219:. For example,
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936:Computer humor
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776:The New Yorker
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643:Ritchie, D. M.
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616:Ritchie, D. M.
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193:Version 5 Unix
186:Version 4 Unix
178:
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26:
9:
6:
4:
3:
2:
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895:Nullable type
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844:Null function
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753:. Freebsd.org
752:
746:
732:on 2013-03-26
731:
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703:9781590790632
699:
695:
694:
686:
672:on 2015-09-07
671:
667:
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650:
649:
645:(June 1974).
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541:SteveL-MSFT.
537:
523:on 2020-07-02
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498:0-553-34294-0
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19:
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859:Null pointer
838:
779:. Retrieved
775:
766:
755:. Retrieved
745:
734:. Retrieved
730:the original
720:
692:
685:
674:. Retrieved
670:the original
660:
647:
639:Thompson, K.
633:
620:
612:Thompson, K.
606:
595:. Retrieved
591:
588:"bit bucket"
582:
571:. Retrieved
561:
550:. Retrieved
546:
536:
525:. Retrieved
521:the original
516:
507:
487:
480:
469:. Retrieved
465:
456:
433:
420:
351:
329:
322:April Fool's
315:
311:
308:PowerBook G4
297:
255:
236:special file
234:device is a
229:
206:
190:
180:
164:
150:and also in
108:\Device\Null
90:(internally
51:
45:
43:
931:Device file
869:Null string
864:Null in SQL
839:Null device
592:Jargon File
392:Device file
367:Memory hole
341:that would
294:Leo Laporte
217:redirection
56:device file
52:null device
32:Null Device
915:Categories
849:Null modem
781:2024-01-24
757:2012-11-28
736:2015-09-02
712:1036874851
676:2018-11-15
597:2013-12-27
573:2012-11-29
552:2020-03-06
527:2020-03-06
471:2020-03-06
449:References
171:black hole
167:bit bucket
112:Windows NT
102:and newer
887:See also:
823:computing
821:Nulls in
405:/dev/full
398:/dev/zero
372:rm (Unix)
336:/dev/null
328:magazine
318:/dev/null
282:/dev/null
274:/dev/null
270:/dev/null
266:/dev/null
262:metaphors
248:command.
240:directory
232:/dev/null
197:/dev/null
182:/dev/null
70:systems,
68:Unix-like
60:/dev/null
39:/dev/zero
356:See also
299:The Site
286:Dev Null
238:, not a
160:DD DUMMY
92:\DEV\NUL
46:In some
209:streams
177:History
140:process
128:OpenVMS
104:Windows
76:TOPS-20
710:
700:
495:
326:German
310:reads
258:jargon
136:$ null
50:, the
652:(PDF)
426:z/VSE
412:Notes
203:Usage
130:. In
120:Amiga
78:) or
74:(see
54:is a
708:OCLC
698:ISBN
493:ISBN
439:z/OS
339:chip
230:The
213:file
191:The
116:NIL:
100:OS/2
86:and
84:CP/M
72:NUL:
66:and
64:Unix
18:NUL:
347:LED
331:c't
169:or
158:to
156:JCL
144:EOF
126:on
124:NL:
118:on
114:),
110:on
98:on
96:nul
94:),
88:DOS
82:on
80:NUL
62:on
917::
774:.
706:.
641:;
614:;
590:.
545:.
515:.
464:.
349:.
245:mv
188:.
173:.
162:.
814:e
807:t
800:v
784:.
760:.
739:.
714:.
679:.
600:.
576:.
555:.
530:.
501:.
474:.
441:.
428:.
41:.
34:.
20:)
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