#! /bin/bash source core.sh source block.sh ./fscreate #echo -ne "0005foo\n0006bar\n0000\n" | dd of=$OSFS bs=512 count=1 seek=4 conv=notrunc,sync 2>/dev/null block_set 4 "0008foo\n0009bar\n00010005\n" block_set 5 "0010baz\n0011boo\n0000\n" bt_mark 4 bt_mark 5