null(category18-confixx.html) - phpMan

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

NAME
       null, zero - data sink
DESCRIPTION
       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
FILES
       /dev/null
       /dev/zero
NOTES
       If these devices are not writable and readable for all users, many pro-
       grams will act strangely.
SEE ALSO
       chown(1), mknod(1), full(4)
COLOPHON
       This page is part of release 3.53 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)