Technologie

Memberd

Memberd

memberd — group membership resolution daemon

SYNOPSIS

memberd [options]

DESCRIPTION

memberd is a daemon process used by the system to resolve group member-
ships. It should always be running and responds to messages from the
kernel or other processes using membership API calls. All resolution is
done using Open Directory calls for both legacy and new group formats,
including support for nested group resolution.

A list of flags and their descriptions:

-h Lists the options for calling memberd
-v Prints the build version
-x Prevents memberd from daemonizing
-d Same as -x but enables output to terminal
-s Prints usage statistics for the running daemon
-c Clears existing statistics for running daemon
-t Runs a self test against the running daemon
-r Resets the memberd cache
-u Ar name Determines the UUID for the provided username
-g Ar group Determins the UUID for the provided group name
-l Dumps log to a file in /Library/Logs/memberd_dump.log
-L Dumps log and cache to log file in /Library/Logs/memberd_dump.log

EOF

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mDNSResponder

mDNSResponder

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
https://developer.apple.com/bonjour/index.html
For the source code to mDNSResponder, see
https://developer.apple.com/opensource/

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.

EOF

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