Replace cat /dev/urandom with dd if=/dev/urandom.
Replace cat /dev/urandom with dd if=/dev/urandom.

When launching with systemd, the output of cat /dev/urandom is
truncated before reaching the desired number of characters, causing
cat to spin at 100% cpu.

josephburnett/hive-jam,josephburnett/hive-jam,josephburnett/sonic-jam,josephburnett/sonic-jam,josephburnett/hive-jam,josephburnett/hive-jam,josephburnett/sonic-jam,josephburnett/sonic-jam