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by dredmorbius 238 days ago
/dev/null is a device file, and can be removed by root, or any user with write access to the /dev directory itself.

You can recreate it with 'mknod /dev/null c 1 3; chmod 666 /dev/null'.

The '1 3' are the major and minor device numbers, respectively, which are assigned / maintained by LANA, the Linux Assigned Numbers Authority.