fm - control frequency, volume, mute/unmute of FM radio card
-h ] [ -o ] [ -q ] [ -d device ] [
-t tuner ] [ -T none | forever |
time ] on | off | + | - | freq [
is a program to control the frequency, volume, and mute/unmute state
of an FM radio card, using the video4linux interface introduced in 2.1.x
series Linux kernels.
- Print a usage message to standard output, and exit.
- Ignore frequency range limits of card. Use if you suspect
that the card supports a wider frequency range than its driver
- Quiet mode. Keeps information on station and volume from
being printed on standard output.
- -d device
- Sets device as the device to tune. The default is
- -t tuner
- Sets tuner as the tuner on the selected device to
adjust. The default is tuner 0. Most radio devices have only a single
- -T none | forever | time
- After tuning, sleep for the time specified or forever. Time
is specified in seconds by default. A suffix of m indicates
minutes, h indicates hours, or d indicates days.
- The -T option is useful with radio card drivers that
only maintain the tuner settings while the tuner's file descriptor remains
open. Try using this option if running fm ordinarily produces only
a single "pop" from your speakers.
- Frequency to tune the radio to, in MHz. For instance,
88.9 specifies a frequency of 88.9 MHz. AM tuner values are also
specified in MHz; for instance, 530 kHz would be specified as
- Turn the radio on (unmute).
- Turn the radio off (mute).
- Specify the desired volume, in percent. Not all radio
devices support volume control.
- Increase the current volume.
- Decrease the current volume.
, if it exists, to obtain default
settings. Each line may take one of the following forms:
- VOL percent
- Specifies default volume (default: 12.5%).
- INCR percent
- Volume increment used for + and - options
- Default sleep time (default: none).
All other lines are ignored.
- Additional documentation:
- The fmtools homepage:
Russell Kroll <email@example.com>, now maintained by Ben Pfaff
<firstname.lastname@example.org>. Sleep time feature contributed by Dave Ulrick
<email@example.com>. This manpage written by Ben Pfaff.