NULS(7)                              SysV                              NULS(7)



NAME
     nuls - null STREAMS driver

SYNOPSIS
     /dev/nuls

DESCRIPTION
     nuls discards all data written to it (all downstream messages, except as
     noted below) and blocks indefinitely on reads.

     nuls provides canonical ioctl handling, by NAKing all M_IOCTL messages it
     receives.  Canonical flush processing is also provided, i.e., nuls
     replies to an M_FLUSH message, if FLUSHRW is set, by sending a FLUSHR
     M_FLUSH message upstream.

FILES
     /dev/nuls

SEE ALSO
     nulm(7)