cram up your drive with random files

cram_drive.sh

cram_drive() {
    local names=(
        # "100gb 100*2**30"
        # "10gb 10*2**30"
        "2gb 2*2**30"
        "1gb 2**30"
        "100mb 100*2**20"
        "10mb 10*2**20"
        "1mb 2**20"
        "100kb 100*2**10"
        "10kb 10*2**10"
        "1kb 2**10");
    
    function create_file() {
        local name="${1}"
        local size="${2}"
        local maxCount=10000
        #
        mkdir -p $name;
        for it in {00000..${maxCount}}; do {
            local file="${name}/${name}_${it}.txt"
            echo "${file}" 
            openssl rand -out ${file} -base64 $(( ${size} * 3/4 )) || return 1
        }; done
    }

    for name in $names; do {
        echo ">>> ${name}"
        create_file `echo ${name}`
    }; done

}