_pwrite_byte 0x80 0 737373 $SCRATCH_MNT/urk >> $seqres.full
sync
$here/src/punch-alternating $SCRATCH_MNT/urk >> $seqres.full
_pwrite_byte 0x80 0 737373 $SCRATCH_MNT/urk >> $seqres.full
sync
$here/src/punch-alternating $SCRATCH_MNT/urk >> $seqres.full