code: private String launchPing() {
          long startTime = System.currentTimeMillis();
          mCommand = new Command("/system/bin/ping",
                  "-c", String.valueOf(mCount),
                  "-s", String.valueOf(mSize),
                  mTarget);
          try {
              String res = Command.command(mCommand);
              mTotalTime = (System.currentTimeMillis() - startTime);
              return res;
          } catch (Exception e) {
              cancel();
              return null;
          } finally {
              mCommand = null;
          }
      }
docs: *********************************************************************************************
  To parse and load
  *********************************************************************************************