Create a collection of dummy files to use up space

create-dummy-files.sh

#!/bin/bash -e

START=${1:-1}
END=${2:-10}

for i in $(seq ${START} ${END}); do
  filename=$(printf 'dummy-10GiB-%03d.bin' $i)
  if [[ -f ${filename} ]]; then
    echo "Dummy file ${filename} already exists"
  else
    echo "Creating dummy file ${filename}"
    dd if=/dev/urandom of=${filename} bs=1M count=10240
  fi
done