/dev/zero 라는 것

실수로 /dev/zero를 지웠는데요…
다시 살릴수 없을까요…ㅡㅡ;;
아무래도 지우면 안되는거 였는데…;;;

man page에서 긁어 옵니다~

NULL(4) Linux Programmer’s Manual NULL(4)

null, zero - data sink

Data written to a null or zero special file is discarded.

   Reads  from  the  null  special  file  always return end of file (i.e.,
   read(2) returns 0), whereas reads from zero always  return  bytes  con‐
   taining zero (\0 characters).

   null and zero are typically created by:

          mknod -m 666 /dev/null c 1 3
          mknod -m 666 /dev/zero c 1 5
          chown root:root /dev/null /dev/zero


If these devices are not writable and readable for all users, many pro‐
grams will act strangely.

chown(1), mknod(1), full(4)

This page is part of release 3.22 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.

Linux 2009-02-23 NULL(4)
[/code:3ielog2n]물론 mknod와 chown 명령은 (root로 하거나) sudo를 이용하셔야겠지요.