From: Jim Meyering <jim@meyering.net>
Date: Tue, 13 Mar 2001 08:29:01 +0000 (+0000)
Subject: 'sort F -o F' no longer needs to copy F.
X-Git-Tag: FILEUTILS-4_0_42~49
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=25a9e171a2602120c53e8ab7787fa7cd33482f3e;p=thirdparty%2Fcoreutils.git

'sort F -o F' no longer needs to copy F.
---

diff --git a/doc/textutils.texi b/doc/textutils.texi
index 5713a4a7fd..bea4b19a18 100644
--- a/doc/textutils.texi
+++ b/doc/textutils.texi
@@ -2256,9 +2256,9 @@ Other options are:
 @opindex -o
 @cindex overwriting of input, allowed
 Write output to @var{output-file} instead of standard output.
-If @var{output-file} is one of the input files, @code{sort} copies
-it to a temporary file before sorting and writing the output to
-@var{output-file}.
+If necessary, @command{sort} reads input before opening
+@var{output-file}, so you can safely sort a file in place by using
+commands like @code{sort F -o F} and @code{cat F | sort -o F}.
 
 @item -S @var{size}
 @opindex -S