swrng -dd -fn STDOUT -nb 12000000000 | ent
Entropy = 8.000000 bits per byte.
Optimum compression would reduce the size
of this 12000000000 byte file by 0 percent.
Chi square distribution for 12000000000 samples is 261.93, and randomly
would exceed this value 36.94 percent of the times.
Arithmetic mean value of data bytes is 127.4996 (127.5 = random).
Monte Carlo value for Pi is 3.141628214 (error 0.00 percent).
Serial correlation coefficient is 0.000016 (totally uncorrelated = 0.0).