Re: usrp and 52mhz installation problem

Hi all,
I just purchased 52MHz external clock from Kestral signal processing,
successful follow up of installation guide (, I tested
I got this message:

zero@zero-laptop:~/gnuradio/gnuradio-examples/python/usrp$ sudo
Testing 2MB/sec…

and no any further lines, please let me know what I made wrong
your reply is appreciated