title: Use picocom - sending request
body: <p>I'm sorry, but I don't understand how use picocom to send a request/command to the device.
  Official doc: <a href="http://linux.die.net/man/8/picocom" rel="noreferrer">http://linux.die.net/man/8/picocom</a></p>
  
  <p>I want to be IN the OS I reach, I connect to an Arduino YUN using linux OS inside and I want to be root on it, it's probably easy, I'm already connected but I don't understand what I have to do!</p>
  
  <pre><code>vado@ubuntu:~$ picocom -b 115200 /dev/ttyACM0
  picocom v1.4
  
  port is        : /dev/ttyACM0
  flowcontrol    : none
  baudrate is    : 115200
  parity is      : none
  databits are   : 8
  escape is      : C-a
  noinit is      : no
  noreset is     : no
  nolock is      : no
  send_cmd is    : ascii_xfr -s -v -l10
  receive_cmd is : rz -vv
  
  Terminal ready
  </code></pre>
  
  <p>Terminal ready and I can do nothing, I can't entering command line or whatever. I tried to do ce escape think with C-a but I don't understand at all how enter C-a... </p>
  
  <p>Need help, please.
  Thank you.</p>