    GETUID(II)                   5/15/74                   GETUID(II)

    NAME
         getuid  -  get user identifications

    SYNOPSIS
         (getuid = 24.)
         sys getuid

         getuid( )

    DESCRIPTION
         Getuid  returns  a  word (in r0), the low byte of which con-
         tains the real user ID of the  current  process.   The  high
         byte  contains the effective user ID of the current process.
         The real user ID identifies the person who is logged in,  in
         contradistinction to the effective user ID, which determines
         his access permission at the moment.  It is thus  useful  to
         programs  which  operate  using the ``set user ID'' mode, to
         find out who invoked them.

    SEE ALSO
         setuid(II)

    DIAGNOSTICS
         -

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