$ python soapyfile.py -f 100.1e6 -r 1e6 --pcm16 -g 42 --output out --pause

$ soapyfile.py --help
usage: soapyfile.py [-h] [-l] [-d DEVICE] [-f FREQUENCY] [-r RATE] [-g GAIN]
                    [-a] [--iq-swap] [--biastee] [--digital-agc]
                    [--offset-tune] [--direct-samp DIRECT_SAMP] [--pcm16]
                    [--rf64] [--notimestamp] [--pause] [--output OUTPUT]
                    [--packet-size PACKET_SIZE] [--buffer-size BUFFER_SIZE]
                    [--hostname HOSTNAME] [--port PORT] [--refresh REFRESH]
                    [--quiet]

optional arguments:
  -h, --help            show this help message and exit
  -l, --list            list devices (default: False)
  -d DEVICE, --device DEVICE
                        device name (default: None)
  -f FREQUENCY, --frequency FREQUENCY
                        center frequency (Hz) (default: None)
  -r RATE, --rate RATE  sampling rate (Hz) (default: None)
  -g GAIN, --gain GAIN  front end gain (dB) (default: None)
  -a, --agc             enable AGC (default: False)
  --iq-swap             swap IQ signals (default: False)
  --biastee             enable bias tee (default: False)
  --digital-agc         enable digital AGC (default: False)
  --offset-tune         enable offset tune (default: False)
  --direct-samp DIRECT_SAMP
                        select I or Q channel: 1 or 2 (default: None)
  --pcm16               write 16-bit PCM samples (default: False)
  --rf64                write RF64 file (default: False)
  --notimestamp         do not add timestamp to filename (default: False)
  --pause               pause recording (default: False)
  --output OUTPUT       output file name (default: output)
  --packet-size PACKET_SIZE
                        packet size (default: 1024)
  --buffer-size BUFFER_SIZE
                        buffer size in MB (default: 256)
  --hostname HOSTNAME   REST server hostname (default: 0.0.0.0)
  --port PORT           REST server port number (default: 8080)
  --refresh REFRESH     peak meter refresh (sec) (default: 2)
  --quiet               do not print peak values (default: False)

PUT /quit              
   
          stop recording and terminate program, yes or no
PUT /rate              
    
          set sampling rate (Hz) but only if recording is paused
PUT /frequency         
     
           set center frequency (Hz)
PUT /gain              
      
            set gain (dB)
PUT /agc               
       
         enable agc, yes or no PUT /pause 
        
          pause recording, yes or no PUT /setting/
          
          
            change named soapy setting GET /rate return sampling rate (Hz) GET /frequency return center frequency (Hz) GET /gain return gain (Hz) GET /agc return AGC setting (yes or no) GET /pause return whether the recording is paused (yes or no) GET /setting return list of available soapy setting names GET /setting/
           
             return value of named soapy setting GET /s16 return 16-bit integer PCM WAV HTTP audio stream GET /f32 return 32-bit floating point PCM WAV HTTP audio stream