    UTMP(V)                      9/10/73                      UTMP(V)

    NAME
         utmp - user information

    DESCRIPTION
         This  file  allows  one to discover information about who is
         currently using UNIX.  The file is  binary;  each  entry  is
         16(10)  bytes  long.  The first eight bytes contain a user's
         login name or are null if the table slot is unused.  The low
         order byte of the next word contains the last character of a
         typewriter name.  The next two words contain the user's  lo-
         gin time.  The last word is unused.

    FILES
         /etc/utmp

    SEE ALSO
         init(VIII) and login(I), which maintain the file; who(I),
         which interprets it.

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