Generate random ASCII file and add to git

gen.sh

TIME=time
for (( i=1; i<=10000000; i++))
  do
    filename=`cat /dev/urandom | env LC_CTYPE=C tr -cd 'a-f0-9' | head -c 32`
    folder=`cat /dev/urandom | env LC_CTYPE=C tr -cd 'a-f0-9' | head -c 2`
    mkdir -p $folder
    base64 /dev/urandom | head -c 102400 > $folder/$filename.txt
    git add  $folder/$filename.txt
    $TIME -o stat.txt -a  -f "%U|%S" git commit . -m"for $filename.txt"
    echo $i
  done;