Command line hackrf_transfer ͞ r/dev/null doesn't work

[zen1963]

Hi , I have another problem when I enter this command ; hackrf_transfer ͞ r /dev/null it doesn't work as on the lesson 5 of Michael Ossman ! The same lines with the command : hackrf_transfer are repeated ! And I notice that there is two lines that we don't find on the lesson 5 of Michael Ossman :

[pavsa]

This does not seem to be related to this project, I think you need to head to https://github.com/mossmann/hackrf