NASD(1)

📦 version 1.9.5, in fedora 43, fedora 44

💖 NAME 💖

okay so <pink>nasd</pink> is the Network Audio System server — that's the whole vibe bestie, it's the generic name for the Network Audio System server. And lowkey the tea is that it's frequently a link or a copy of the appropriate server binary for driving the most frequently used server on a given machine. slay. 💅

This page lives in the General Commands Manual, and the command itself is just <pink>nasd</pink>. 🎀

✨ SYNOPSIS ✨

nasd [:listen port offset] [-option ...]

🦋 DESCRIPTION 🦋

nasd is the generic name for the Network Audio System server. It is frequently a link or a copy of the appropriate server binary for driving the most frequently used server on a given machine. periodt. 💜

🌸 STARTING THE SERVER 🌸

The server is usually started from /etc/rc or a user's startup script. very demure, very startup-script of it.

When the Network Audio System server starts up, it takes over /dev/audio. 🎧 Not me just grabbing the audio device like it's mine.

Note, that if ReleaseDevice is set to TRUE [default] in the nasd.conf file, nasd will relinquish control of the audio device whenever it has finished playing a sound. This means you can use other non-NAS applications when nasd is running, as long as nasd isn't currently playing a song. 🎵

If ReleaseDevice is set to FALSE in the nasd.conf file, applications that attempt to access /dev/audio themselves will fail while nasd is running. 😭 so possessive of it fr fr.

🌈 NETWORK CONNECTIONS 🌈

The Network Audio System server supports connections made using the following reliable byte-streams:

  • TCPIP — The server listens on port 8000+n, where n is the listen port offset.
  • Unix Domain — The X server uses /tmp/.sockets/audion as the filename for the socket, where n is the display number.

👑 OPTIONS 👑

All of the Network Audio System servers accept the following generic command line options. Options specific to a particular server may also be available, and are not listed here. Try nasd -? for a list of those options, if available. iykyk 🫶

  • -aa — Allows any client to connect. By default, access is allowed only to authenticated clients. (no bouncer at the door, everyone's invited 🎉)
  • -local — Allows only clients on the local host to connect. By default, access is allowed to local and remote hosts.
  • -v — Enable verbose messages. This option overrides the nasd.conf file setting. she's chatty 💬
  • -V — Print version information and exit (ignoring other options).
  • -b — Fork a child to run in the background and exit (daemon mode). Messages are sent to syslog instead of stderr.
  • -d n — Enable debugging output at level n, where n is a positive integer. The higher the level, the more output you will get. A value of 0 [default] disables debugging output. This option overrides the nasd.conf file setting. the way that n just keeps going up 🔥
  • -pn
  • -nopn [default] — Enables or disables Partial Networking. Enabling Partial Networking allows the server to start, even if the server cannot establish all of its well-known sockets (connection points for clients), but establishes at least one. it's giving "we tried our best and that's enough" 💀
  • -config file — Use the config file file, instead of the default (/etc/nasd/nasd.conf).

💅 SIGNALS 💅

The Network Audio System server attaches special meaning to the following signals:

  • SIGHUP — This signal causes the server to close all existing connections, free all resources, and restore all defaults. full factory reset energy ✨
  • SIGTERM — This signal causes the server to exit cleanly. leaving the party politely 🚪
  • SIGUSR1 — This signal is used quite differently from either of the above. When the server starts, it checks to see if it has inherited SIGUSR1 as SIG_IGN instead of the usual SIG_DFL. In this case, the server sends a SIGUSR1 to its parent process after it has set up the various connection schemes. it's giving "text me when you're home safe" 😭

🙈 DIAGNOSTICS 🙈

Too numerous to list them all. bestie there are so many we simply cannot 🫠

🍓 FILES 🍓

  • /tmp/.sockets/audio* — Unix domain socket
  • /usr/adm/audio*msgs
  • /dev/audio — Audio device

⭐ SEE ALSO ⭐

nas(1), auinfo(1), auplay(1), auctl(1), nasd.conf(1)

💀 BUGS 💀

If au dies before its clients, new clients won't be able to connect until all existing connections have their TCP TIME_WAIT timers expire. not the TIME_WAIT timer era 😭

The current access control support is weak at best. ngl. it's giving wet paper towel 🧻

Copyright 1993, Network Computing Devices, Inc.

💜 AUTHORS 💜

The Network Audio System server was originally written by Greg Renda and Dave Lemke, with large amounts of code borrowed from the sample X server.

The sample X server was originally written by Susan Angebranndt, Raymond Drewry, Philip Karlton, and Todd Newman, from Digital Equipment Corporation, with support from a large cast. It has since been extensively rewritten by Keith Packard and Bob Scheifler, from MIT. legends only, no cap 👑

and that's the whole page bestie!! 🦋 this was the NASD(1) page from the General Commands Manual — that's the source and the page number right there at the bottom, sitting pretty. mwah, go play some sounds 💖✨🎀

📦 where this page comes from