Originální popis anglicky:
null, zero - data sink
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
If these devices are not writable and readable for all users, many programs will
act strange.
/dev/null
/dev/zero
chown(1),
mknod(1)
