The sort -R command doesn't sort lines randomly in Linux [closed]

Answer 1

It works on my Ubuntu 8.04 machine. Maybe the problem is the source of randoms. From the manual:

--random-source=FILE

         get random bytes from FILE (default /dev/urandom)

# this should give always the same result:
echo -e '2\n1\n3\n5\n4' | sort -R --random-source=/dev/zero

# this should be random:
echo -e '2\n1\n3\n5\n4' | sort -R --random-source=/dev/urandom