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2 definitions found
 for /dev/null
From The Jargon File (version 4.4.7, 29 Dec 2003) :

  /dev/null
   /dev?nuhl/, n.
  
      [from the Unix null device, used as a data sink] A notional ?black hole? in
      any information space being discussed, used, or referred to. A
      controversial posting, for example, might end ?Kudos to
      rasputin@kremlin.org, flames to /dev/null?. See bit bucket.
  

From The Free On-line Dictionary of Computing (30 December 2018) :

  /dev/null
  
      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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