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.