NAME

       zhm - Zephyr HostManager

SYNOPSIS

       /usr/sbin/zhm [ -d ] [ -n ] [ -h ] [ -r ] [ -i ] [ -f ] [ -N ] [ server ...  ]

DESCRIPTION

       Zhm  is  the  link  between a client machine and the zephyr server.  All notices sent from
       programs on the client are funneled through zhm.  This allows all client  programs  to  be
       much  simpler  in  function,  since  the  HostManager  is responsible for handling errors,
       retransmitting lost notices, and holding all notices until they are acknowledged.

       The -d option turns on debugging mode, and sends  its  information  to  syslog  LOG_DAEMON
       messages.

       The -n option causes zhm to not attempt to put itself in the background.

       The  -h  option  causes  zhm to send a shutdown message and exit upon delivery of a SIGHUP
       signal.  The normal action on SIGHUP is to send a flush notice to the zephyr server.

       The -r option causes zhm to send a boot notice to the server and exit when the  notice  is
       acknowledged.

       The  -i  option  indicates  that  zhm  is  being started by inetd(8).  When this option is
       specified, zhm assumes that file descriptor zero (0) is bound to  the  UDP  datagram  port
       designated  for hostmanager use.  In this mode, SIGHUP is handled as if the -h option were
       specified.

       The -f option disables the  "flush"  operation  which  allows  any  client  to  flush  all
       subscriptions for the host.

       The  -N option supresses the initial "boot" message that flushes all subscriptions for the
       host, which is useful if you're restarting zhm on a host that people are using.

       The optional server arguments are used to replace the set of server names supplied by  the
       hesiod(3) name server.

SEE ALSO

       zephyr(1), zephyrd(8), inetd(8)
       Project Athena Technical Plan Section E.4.1, `Zephyr Notification Service'

AUTHOR

       David C. Jedlinsky, MIT Project Athena

RESTRICTIONS

       Copyright  (c)  1987,1988  by  the  Massachusetts  Institute  of  Technology.   All Rights
       Reserved.
       zephyr(1) specifies the terms and conditions for redistribution.