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Linux in a Nutshell

This directory of Linux commands is from Linux in a Nutshell, 5th Edition.

Click on any of the 687 commands below to get a description and list of available options. All links in the command summaries point to the online version of the book on Safari Bookshelf.

Buy it now, or read it online on Safari Bookshelf.


esd [options]

Start the Enlightened Sound Daemon, also called EsounD, a sound-mixing daemon that allows multiple applications to access a single audio device at one time.


-d devicename

Use the specified device devicename. Some common sound devices are /dev/dsp and /dev/dsp2.


Play eight-bit sound.

-r rate

Specify the sample rate for the server.

-as n

After n seconds of inactivity, release the audio device. Set to -1 for "never."


Use UNIX domain sockets. Default is TCP/IP.


Use TCP/IP sockets. This is the default.


Allow remote systems to access the daemon over TCP/IP.


Disable authentication. Not recommended.


When last client exits, quit.


Do not beep when starting.


Beep when starting.


Allow esd to start even if the /tmp/.esd directory may be insecure.

-port n

Listen on TCP/IP port n.

-bind address

Bind to the TCP/IP address specified.

-v, --version

Print version information and quit.

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