From: Paul Eggert <eggert@cs.ucla.edu>
Date: Fri, 15 Jul 2005 21:54:56 +0000 (+0000)
Subject: (nohup invocation): POSIXLY_CORRECT no longer
X-Git-Tag: CPPI-1_12~242
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=adbbc35f87fb72767c05cec8d9b029a482bf75d4;p=thirdparty%2Fcoreutils.git

(nohup invocation): POSIXLY_CORRECT no longer
affects nohup's behavior.  Input is redirected from /dev/null.
---

diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index 5168f40e3f..6fd1cc20e1 100644
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -12615,6 +12615,13 @@ out.  Synopsis:
 nohup @var{command} [@var{arg}]@dots{}
 @end example
 
+If standard input is a terminal, it is redirected from
+@file{/dev/null} so that terminal sessions do not mistakenly consider
+the terminal to be used by the command.  This is a @acronym{GNU}
+extension; programs intended to be portable to non-@acronym{GNU} hosts
+should use @samp{nohup @var{command} [@var{arg}]@dots{} </dev/null}
+instead.
+
 @flindex nohup.out
 If standard output is a terminal, the command's standard output is appended
 to the file @file{nohup.out}; if that cannot be written to, it is appended
@@ -12627,14 +12634,6 @@ regardless of the current umask settings.
 If standard error is a terminal, it is redirected to the same file
 descriptor as the (possibly-redirected) standard output.
 
-@vindex POSIXLY_CORRECT
-If standard input is a terminal, it is closed so that terminal
-sessions do not mistakenly consider the terminal to be used by the
-command.  To avoid glitches in poorly-written programs standard input
-is then reopened with an innocuous file descriptor that cannot be read
-from.  However, these steps are skipped if @env{POSIXLY_CORRECT} is
-set since @acronym{POSIX} requires standard input to be left alone.
-
 @command{nohup} does not automatically put the command it runs in the
 background; you must do that explicitly, by ending the command line
 with an @samp{&}.  Also, @command{nohup} does not change the