How to create multiple files with random data with bash

Question

How do I create multiple files (More than 20k, I need these files to run a test for syncying) with random data in OS X? I used a previously answered question (How Can I Create

Answer 1

Not sure if you have any file naming requirements, but perhaps this:

for x in {1..20000}; do
  dd if=/dev/random of=test$x.dat bs=10000 count=4
done