That's going to be very slow though, as it will read and write everything one byte at a time. The problem of course is that you can't specify seek/skip/count values as bytes unless your block size is 1 byte.

If you don't need seek then you can at least use ibs=1 instead, as skip/count operate on input blocks, but this will still read one byte at a time even though it will aggregate the reads into larger output blocks.

It would be really nice if we had a dd2 tool that offered similar options but defaulted the block size to a new "auto" value, treated seek/skip as byte values, and treated count as a byte value if the input block size is "auto".