dd if=/dev/zero of=file2 bs=1k count=16 2>/dev/null
# ext4 on images <512M gives 81kb
# ext3 on images <512M gives 83kb
+# a bsd system reportedly gives 82kb
test x"`busybox du -k .`" = x"80 ." \
-o x"`busybox du -k .`" = x"81 ." \
+ -o x"`busybox du -k .`" = x"82 ." \
-o x"`busybox du -k .`" = x"83 ." \
-o x"`busybox du -k .`" = x"84 ." \
-o x"`busybox du -k .`" = x"88 ."