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).

SYNOPSYS

       axfer subcommand direction options

       subcommand = transfer | list | version | help

       direction = capture | playback

       options = ( depends on subcommand )

DESCRIPTION

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

OPTIONS

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

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

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

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

   Direction
       capture
              Operates for capture transmission.

       playback
              Operates for playback transmission.

EXIT STATUS

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

UNIT TEST

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

COMPATIBILITY TO APLAY

       The 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.

           $ ln -s aplay axfer
           $ ln -s arecord axfer

   A string to which arg[0] points
       When args[0] in run time points to string ended with 'aplay', it has the same  meaning  of
       playback direction. When it points to string ended with 'arecord', it has the same meaning
       of capture direction.

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

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.

SEE ALSO

       axfer-transfer(1), axfer-list(1), alsamixer(1), amixer(1)

AUTHOR

       Takashi Sakamoto <o-takashi@sakamocchi.jp>