ref: 2473bd0e87137da5a04c269beb06c2162839390d
dir: /tests/test.a/notes/
test write, read and deletion of a 100MB file..
for (b in `{seq 22 1 53}) { echo $b; disk/block -f disk $b }
for (b in `{seq 22 1 40959}) { echo $b; disk/block -f test.3/disk $b > test.3/blocks/^$b}