/etc/mknod ${name}${unit}a b $blk `expr $unit '*' 8 + 0`
/etc/mknod ${name}${unit}b b $blk `expr $unit '*' 8 + 1`
/etc/mknod ${name}${unit}c b $blk `expr $unit '*' 8 + 2`
/etc/mknod ${name}${unit}a b $blk `expr $unit '*' 8 + 0`
/etc/mknod ${name}${unit}b b $blk `expr $unit '*' 8 + 1`
/etc/mknod ${name}${unit}c b $blk `expr $unit '*' 8 + 2`