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null.4: Minor clarifications
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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man4/null.4
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man4/null.4
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.\" USA.
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.\"
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.\" Modified Sat Jul 24 17:00:12 1993 by Rik Faith (faith@cs.unc.edu)
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.TH NULL 4 1992-11-21 "Linux" "Linux Programmer's Manual"
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.TH NULL 4 2009-02-23 "Linux" "Linux Programmer's Manual"
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.SH NAME
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null, zero \- data sink
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.SH DESCRIPTION
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Data written on a \fBnull\fP or \fBzero\fP special file is discarded.
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Data written to a \fBnull\fP or \fBzero\fP special file is discarded.
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.PP
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Reads from the \fBnull\fP special file always return end of file, whereas
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reads from \fBzero\fP always return \e0 characters.
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Reads from the \fBnull\fP special file always return end of file (i.e.,
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.BR read (2)
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returns 0), whereas
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reads from \fBzero\fP always return bytes containing zero (\e0 characters).
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.LP
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\fBnull\fP and \fBzero\fP are typically created by:
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.RS
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