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.
-d option turns on debugging mode, and sends its information to syslog
-n option causes zhm to not attempt to put itself in the background.
-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.
-r option causes
zhm to send a boot notice to the server and exit when the notice is acknowledged.
-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.
-f option disables the "flush" operation which allows any client to flush
all subscriptions for the host.
-N option supresses the initial "boot" message that flushes all subscriptions
for the host, which is useful if youre restarting zhm on a host that
people are using.
server arguments are used to replace the set of server names supplied by
hesiod(3) name server.