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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