- fm [ -h ] [ -o ] [ -q ] [ -d device ] [ -t tuner ] [ -T none | forever | time ] on | off | + | - | freq [ volume ]
- 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 believes.
- Quiet mode. Keeps information on station and volume from being printed on standard output.
- -d device
- Sets deviceas the device to tune. The default is /dev/radio0.
- -t tuner
- Sets tuneras the tuner on the selected device to adjust. The default is tuner 0. Most radio devices have only a single tuner.
- -T none | forever | time
- After tuning, sleep for the time specified or forever. Time is specified in seconds by default. A suffix ofm 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 .530.
- 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.
CONFIGURATIONfm reads $HOME/.fmrc, 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: 10%).
- Default sleep time (default: none).
All other lines are ignored.