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RedHat 9 (Linux i386) - man page for zero (redhat section 4)

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

NAME
       null, zero - data sink

DESCRIPTION
       Data written on a null or zero special file is discarded.

       Reads from the null special file always return end of file, whereas reads from zero always
       return \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:mem /dev/null /dev/zero

NOTES
       If these devices are not writable and readable for  all	users,	many  programs	will  act
       strange.

FILES
       /dev/null
       /dev/zero

SEE ALSO
       chown(1), mknod(1)

Linux					    1992-11-21					  NULL(4)
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