.TH AXFER 1 "28 November 2018" "alsa\-utils"

.SH NAME
axfer \- command\-line sound recorder and player for sound devices and nodes
supported by Linux sound subsystem (Advanced Linux Sound Architecture, also
known as ALSA).

.SH SYNOPSYS

.B axfer
.I subcommand direction options

subcommand =
.B transfer
|
.B list
|
.B version
|
.B help

direction =
.B capture
|
.B playback

options = ( depends on
.I subcommand
)

.SH DESCRIPTION
The
.B axfer
is a command\-line recorder and player to transfer audio data frame between
sound devices/nodes and files/stdin/stdout.

.SH OPTIONS

.SS Subcommand

.TP
.B transfer
Performs transmission of audio data frame. Its detail is described in
.B axfer\-transfer(1)
manual.

.TP
.B list
Dumps lists of available sound devices and nodes. Its detail is described in
.B axfer\-list(1)
manual.

.TP
.B version
Prints version of this application (as the same version as alsa\-utils package).

.TP
.B help
Prints a short message about subcommands for users to enter this application.

.SS Direction

.TP
.B capture
Operates for capture transmission.

.TP
.B playback
Operates for playback transmission.

.SH EXIT STATUS

.I EXIT_SUCCESS
(0) if run time successfully finished, else
.I EXIT_FAILURE
(1).

.SH UNIT TEST

This program has unit tests for internal implementation. Please refer to the
manual of
.I axfer-transfer
for details.

.SH COMPATIBILITY TO APLAY

The
.I axfer
is designed to be compatible to aplay(1) as much as possible. In command line,
executions of aplay/arecord files under $PATH runs axfer with compatibility
mode if filesystem has symbolic link from the aplay/arecord to axfer.

.PP
.in +4n
.EX
$ ln \-s aplay axfer
$ ln \-s arecord axfer
.EE
.in
.PP

.SS A string to which arg[0] points
When args[0] in run time points to string ended with \(aqaplay\(aq, it has the
same meaning of
.I playback
direction. When it points to string ended with \(aqarecord\(aq, it has the same
meaning of
.I capture
direction.

.SS Options acknowledged as list subcommand
Options of
.I \-l
,
.I \-\-list\-devices
,
.I \-L
,
.I \-\-list\-pcms
are acknowledged as
.I list
subcommand. Without them, the run time performs
.I transfer
subcommand.

.SH REPORTING BUGS
Report any bugs to mailing list of ALSA community
<alsa\-devel@alsa\-project.org> where the development and maintenance is
primarily done. Bug tracking service of alsa\-utils repository on github.com is
also available.

.SH SEE ALSO
.B axfer\-transfer(1),
.B axfer\-list(1),
.B alsamixer(1),
.B amixer(1)

.SH AUTHOR
Takashi Sakamoto <o\-takashi@sakamocchi.jp>