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The null (NLA0:) device?

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The Question is:

 
NULL DEVICE (NLA0:)
 
What is the use of a null device NLA0:?

The Answer is :

 
  For input, any reads from NLA0: return an immediate EOF (end
  of file) status.  All writes to NLA0: return success status.
 
  The FAQ has various examples of the use of the null device.
 

  
     
     answer written or last revised on ( 13-JUN-2002 )
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