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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.


aplaymidi [options] [file]

Play MIDI files using the ALSA sound system; output is to ALSA sequencer ports.



Delay n seconds at the end of a file to allow for reverberation of the final notes.


Print help message, then exit.


Print version and quit.


List output ports available.


Specify the port to which the MIDI file will be sent. If no port is specified, the file will be sent to port 0.

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