CDCONTROL(1) FreeBSD General Commands Manual CDCONTROL(1)


cdcontrolcompact disc control utility


cdcontrol [ -sv][ -f device][ command ...]


The cdcontrol utility is a program to control audio features of a CD drive. The device is a name such as cd0 or acd0.

If no command is given, then cdcontrol enters an interactive mode, reading commands from the standard input.

The following options are available:

Silent mode. Do not print table headers and human readable comments.
Verbose mode. Print as much information as possible.
-f device
Specify a device, such as /dev/cd0 or acd0. Both absolute path and relative to /dev filename are possible. The -f option overrides CDROM. If neither CDROM nor the -f option is specified, cdcontrol tries opening first /dev/cdrom, then /dev/cd0, and finally /dev/acd0.

The available commands are listed below. Only as many characters as are required to uniquely identify a command need be specified. The word play can be omitted or the characters + and - can be used in the place of next and prev.

play first_track [ last_track]
Play from track first_track to track last_track. The first track has number 1. Can be omitted in all cases.
play start_m: start_s. start_f [ end_m: end_s. end_f]
Play from the absolute address (MSF) defined by start_m in minutes, start_s, in seconds and start_f (frame number) to the absolute address defined by end_m in minutes, end_s, in seconds and end_f (frame number). Minutes are in the range 0-99. Seconds are in the range 0-59. Frame numbers are in the range 0-74.
play [ # start_block [ length]]
Play starting from the logical block start_block using length logical blocks.
next [ tracks]
Skip forward a number of tracks (default 1).
prev [ tracks]
Skip backward a number of tracks (default 1).
Stop playing. Do not stop the disc.
Resume playing. Used after the pause command.
Stop the disc.
Eject the disc.
Inject the disc.
Same as status volume command.
volume level
Set the volume of both channels to level. Allowed values are in the range 0-255.
volume left_channel right_channel
Set the volume of left channel to left_channel and the volume of right channel to right_channel. Allowed values are in the range 0-255.
volume mute
Turn the sound off.
volume mono
Set the mono mode.
volume stereo
Set the stereo mode.
volume left
Play the left subtrack on both left and right channels.
volume right
Play the right subtrack on both left and right channels.
Print the table of contents.
status [ audio | media | volume]
Print the information about the disc:

the current playing status and position
the current media catalog status
the current values of the volume for left and right channels.
Display the serial number of the CD using the method used by the CDDB project ( http://www.cddb.org/).
Print the list of available commands.
debug on
Enable the debugging mode of the CD device driver.
debug off
Disable the driver debugging mode.
Perform the hardware reset of the device.
set msf
Set minute-second-frame ioctl mode (default).
set lba
Set LBA ioctl mode.
speed s
Set the highest speed that the drive should use for reading data. The units are multiples of a single speed CDROM (150 KB/s). Specify “ max” to use the drive's fastest speed.
Quit the program.


The following environment variables affect the execution of cdcontrol:
The CD device to use, if one is not specified with the -f option.
These variables have been deprecated in favour of CDROM.




The cdcontrol command appeared in FreeBSD 2.1.


Jean-Marc Zucconi Andrey A. Chernov Serge V. Vakulenko
June 27, 2008 FreeBSD