uaa@framboise:/export$ for i in *.img;do echo $i ;hexdump -C $i |tail -n2;done

dragonfly-gcc.img

00167ff0 30 c8 df ff ff 7f 00 00 02 00 00 00 02 00 00 00 |0...............|

00168000

freebsd-clang.img

00167ff0 f4 37 e8 00 00 00 00 00 2b 90 a7 67 08 00 00 00 |.7......+..g....|

00168000

freebsd-gcc.img

00167ff0 48 6b 82 20 00 00 00 00 00 00 00 00 00 00 00 00 |Hk. ............|

00168000