#! /bin/sh

dd if=/dev/zero of=scrub.001 bs=1m count=50
vndconfig vnd0 scrub.001
newfs /dev/vnd0a
mount /dev/vnd0a /mnt
cp /etc/passwd /mnt/passwd-noflags
cp /etc/passwd /mnt/passwd-flags
chflags uscrub /mnt/passwd-flags
rm /mnt/passwd-noflags
rm /mnt/passwd-flags
umount /mnt
vndconfig -u vnd0
# examine scrub.001 with strings or binary/hex editor