NAME

notifyd — notification server

SYNOPSIS

notifyd [-d] [-v] [-shm_pages npages] [-no_restart]

DESCRIPTION

notifyd is the server for the Mac OS X notification system described in
notify(3). The server is usually started automatically during system
startup, and is not run from the command line.

The -d option causes notifyd to run in a debugging mode. It will stay
attached to the terminal and print verbose log messages to the terminal.

The -v option causes notifyd to produce verbose logging information.

The -shm_pages npages option sets the number of shared memory pages used
for passive notification. The default is one page. If a value of zero
is specified, shared memory is disabled, and passive notifications are
performed using IPC between the client and the server.

The -no_restart option causes notifyd to register as a non-restartable
server with mach_init.

NAME

mDNSResponder — Multicast DNS daemon

SYNOPSIS

mDNSResponder

DESCRIPTION

mDNSResponder (also known as mdnsd on some systems) is a daemon invoked
at boot time to implement Multicast DNS and DNS Service Discovery.

mDNSResponder listens UDP port 5353 for Multicast DNS Query packets.
When it receives a query for which it knows an answer, mDNSResponder
issues the appropriate Multicast DNS Reply packet.

mDNSResponder also performs Multicast DNS Queries on behalf of client
processes, and maintains a cache of the replies.

mDNSResponder has no user-specifiable command-line argument, and users
should not run mDNSResponder manually.

To examine mDNSResponder’s internal state, for debugging and disagnostic
purposes, send it a SIGINFO signal, and it will then dump a snapshot sum-
mary of its internal state to /var/log/system.log, e.g.

sudo killall -INFO mDNSResponder

FILES

/usr/sbin/mDNSResponder

SEE ALSO

mDNS(1)

For information on Multicast DNS, see http://www.multicastdns.org/
For information on DNS Service Discovery, see http://www.dns-sd.org/
For information on how to use the Multicast DNS and the DNS Service Dis-
covery APIs on Mac OS X and other platforms, see
http://developer.apple.com/bonjour/
For the source code to mDNSResponder, see
http://developer.apple.com/darwin/projects/bonjour/

BUGS

mDNSResponder bugs are tracked in Apple Radar component “mDNSResponder”.

HISTORY

The mDNSResponder daemon first appeared in Mac OS X 10.2 (Jaguar).

Also available from the Darwin open source repository (though not offi-
cially supported by Apple) are mDNSResponder daemons for other platforms,
including Mac OS 9, Microsoft Windows, Linux, FreeBSD, NetBSD, Solaris,
and other POSIX systems.

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