ASEQDUMP(1) General Commands Manual ASEQDUMP(1)

# [NAME](#NAME)

aseqdump - show the events received at an ALSA sequencer port

# [SYNOPSIS](#SYNOPSIS)

**aseqdump** \[*-p client:port,...*]

# [DESCRIPTION](#DESCRIPTION)

**aseqdump** is a command-line utility that prints the sequencer events it receives as text.

To stop receiving, press Ctrl+C.

# [OPTIONS](#OPTIONS)

[*-h,--help*](#h,)

Prints a list of options.

[*-V,--version*](#V,)

Prints the current version.

[*-l,--list*](#l,)

Prints a list of possible input ports.

[*-u,--ump=version*](#u,)

Sets the client MIDI version. 0 is for legacy mode, 1 is UMP MIDI 1.0 mode, and 2 is UMP MIDI 2.0 mode.

[*-r,--raw*](#r,)

Suppress the automatic conversion of events among UMP and legacy clients.

[*-R,--raw-view*](#R,)

Shows the raw values as is. The channel numbers and UMP group numbers are 0-based in this mode. This is the default behavior.

[*-N,--normalized-view*](#N,)

Shows the normalized values to be aligned with MIDI 1.0. The channel numbers and UMP group numbers are shown as 1-based values, i.e. 1 is the lowest number. The velocity and data values are normalized between 0 and 127. The values for MIDI 2.0 are shown with two digits decimal points (from 0.00 to 127.00). The pitch wheel is normalized between -8192 to 8192, too.

[*-P,--percent-view*](#P,)

Shows the values in percentage. The channel numbers and UMP group numbers are shown as 1-based values in this mode, too. The velocity and data values are normalized between 0 and 100%, shown with two digits decimal points. The pitch wheel is normalized between -100% to 100%, too.

[*-p,--port=client:port,...*](#p,)

Sets the sequencer port(s) from which events are received.

A client can be specified by its number, its name, or a prefix of its name. A port is specified by its number; for port 0 of a client, the ":0" part of the port specification can be omitted.

# [AUTHOR](#AUTHOR)

Clemens Ladisch <clemens@ladisch.de>

19 Feb 2005

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Document: aseqdump(1) from alsa-utils 1.2.16-r2 (Chainguard OS)
Source: https://github.com/alsa-project/alsa-utils