/dev/null not found?

Today I came across a box with no /dev/null. Disturbingly that box even refused to boot. Here’s a quick fix in case: Boot with some liveCD and chroot or use some emergency shell and kill the defect dev file in case it’s still there and regenerate:

rm -rf /dev/null mknod /dev/null c 1 3 chmod 666 /dev/null