diff options
| -rw-r--r-- | doc/coreutils.texi | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/doc/coreutils.texi b/doc/coreutils.texi index 5168f40e3..6fd1cc20e 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 |