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s_n_d(8) [minix man page]

SET_NET_DEFAULT(8)					      System Manager's Manual						SET_NET_DEFAULT(8)

s_n_d, set_net_default - select the default TCP/IP network SYNOPSIS
set_net_default: not found DESCRIPTION
This manual page is here because so many others refer to it. The set_net_default command does not exist under standard Minix, because the TCP/IP server only supports one network. The server under Minix-vmd supports four different networks, that can each be chosen as the default network. The TCP/IP library and commands do have a notion about a "default network" however, because the code is shared between the Minix versions. So if you want to venture into network programming then you should know about the devices and environment variables mentioned below to make your program compatible. (Especially since there is a plan to upgrade the TCP/IP server for standard Minix.) Options and environment to change the default Many TCP/IP programs implement the following options and environment variables to change the default devices set by set_net_default. The options are only implemented for low level programs where it makes sense to name a network device. The environment variables are used in all code. You can run a process and all its children connected to a different network by setting four environment variables. ETH_DEVICE=device -E device Device to use as raw ethernet device instead of the default /dev/eth. PSIP_DEVICE=device -P device Pseudo IP device to use instead of /dev/psip. IP_DEVICE=device -I device IP device to use instead of /dev/ip. TCP_DEVICE=device -T device TCP device to use. UDP_DEVICE=device -U device UDP device to use. FILES
/dev/eth[01] First and second raw ethernet. /dev/psip[01] First and second Pseudo IP network. /dev/ip[0123] IP devices for two ethernets and two Pseudo IP networks. /dev/tcp[0123] TCP devices for same four networks. /dev/udp[0123] UDP devices. /dev/eth, /dev/psip, /dev/ip, /dev/tcp, /dev/udp Devices for the default network, links to the devices above. Eth is only present if ethernet is the default, psip only for pseudo IP. SEE ALSO
ip(4), boot(8). AUTHOR
Kees J. Bot ( SET_NET_DEFAULT(8)

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7(16 December 2012)													       7(16 December 2012)

dsp - Open Sound System audio devices DESCRIPTION
/dev/dsp is the default audio device in the system. It's connected to the main speakers and the primary recording source (such as micro- phone). The system administrator can set /dev/dsp to be a symbolic link to the desired default device. The ossinfo utility can be used to list the available audio devices in the system. /dev/dsp_mmap, /dev/dsp_ac3, /dev/dsp_multich and /dev/dsp_spdifout are default audio devices for specific applications such as games or media (DVD) players. DIRECT ACCESS AUDIO DEVICE FILES
OSS 4.0 (and later) will create audio devices under /dev/oss/<device> directory. For example /dev/oss/sblive0/pcm0 is the first audio device that belongs to the first Sound Blaster Live! or Audigy card in the system. These direct devices are used when an application needs to access specific audio device (instead of the default one). You can use the ossinfo(1) utility with the -a option to get a list of the available audio devices in the system. LEGACY AUDIO DEVICE FILES
Traditionally OSS has created device files like /dev/dsp0 to /dev/dspN for each audio device in the system. OSS 4.0 still supports this legacy naming. These files are symbolic links to the actual device files located under /dev/oss. The ossdevlinks(8) utility is used to manage these links and it will be automatically invoked when OSS is started. COMPATIBILITY
o The /dev/dsp (default() audio device file will be supported by all OSS implementations and versions. o The special purpose audio default devices (such as /dev/dsp_mmap) are only supported by OSS 4.0 and later. o The legacy audio device files (such as /dev/dsp1) are supported by all OSS versions and implementations. o New style audio device files (under /dev/oss) are only supported by OSS 4.0 and later. However some independent OSS implementations may only support the legacy naming even they are otherwise OSS 4.0 compatible. o /dev/dsp0 doesn't exist in all Linux systems which use /dev/dsp for the same purpose. In such systems /dev/dsp points to the first audio device and /dev/dsp1 to the second. PROGRAMMING INFORMATION
See the Audio Programming section of the OSS Programmer's Guide (DSP(2)) for more info. OPTIONS
o /dev/dsp Default audio device o /dev/dsp_mmap Default audio device for applications using mmap(2) o /dev/dsp_ac3 Default audio device for applications sending Dolby Digital (AC3) audio to an external receiver. o /dev/dsp_multich Default multichannel (4.0-7.1) audio output device o /dev/dsp_spdifout Default digital audio (S/PDIF) output device o /dev/oss/<driver>/pcmN Direct access device files for individual audio devices. o /dev/dsp0 to /dev/dspN Legacy style direct access audio device files. AUTHOR
4Front Technologies OSS Devices 7(16 December 2012)
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