title: Bluetooth sniffer: How can I install btmon on raspberry Pi?
body: <p>A kind person said that btmon is a useful tool to exam Bluetooth packets. </p>
  
  <p>I want to use btmon in Raspberry Pi but the tool seems to be not installed by default.</p>
  
  <p>Does anyone know that how to install the tool? I am looking for the information for a long time, but I cannot find it.</p>
  
  <p>Thanks.</p>
  
  <p>P.S.</p>
  
  <p>I can use hcidump. However, I guess that btmon is a more user-friendly tool.</p>