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stty: document new --file/-F option

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Jim Meyering
1998-04-04 16:36:30 +00:00
parent cb04f85936
commit c4b7f217a5
1 changed files with 20 additions and 6 deletions
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doc/sh-utils.texi
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@@ -1140,15 +1140,16 @@ The only options are a lone @samp{--help} or
Synopses:
@example
stty [@var{setting}]@dots{}
stty [@var{option}] [@var{setting}]@dots{}
stty [@var{option}]
@end example
If given no arguments, @code{stty} prints the baud rate, line
If given no line settings, @code{stty} prints the baud rate, line
discipline number (on systems that support it), and line settings
that have been changed from the values set by @samp{stty sane}.
Mode reading and setting are performed on the tty line connected to
standard input.
By default, mode reading and setting are performed on the tty line
connected to standard input, although this can be modified by the
@samp{--file} option.
@code{stty} accepts many non-option arguments that change aspects of
the terminal line operation, as described below.
@@ -1160,7 +1161,19 @@ The program accepts the following options. Also see @ref{Common options}.
@itemx --all
@opindex -a
@opindex --all
Print all current settings in human-readable form.
Print all current settings in human-readable form. This option may not
be used in combination with any line settings.
@item -F @var{device}
@itemx --file @var{device}
@opindex -F
@opindex --file
Set the line opened by the filename specified in @var{device} instead of
the tty line connected to standard input. This option is necessary
because opening a POSIX tty requires use of the @code{O_NONDELAY} flag to
prevent a POSIX tty from blocking until the carrier detect line is high if
the @code{clocal} flag is not set. Hence, it is not always possible
to allow the shell to open the device in the traditional manner.
@item -g
@itemx --save
@@ -1168,7 +1181,8 @@ Print all current settings in human-readable form.
@opindex --save
@cindex machine-readable @code{stty} output
Print all current settings in a form that can be used as an argument to
another @code{stty} command to restore the current settings.
another @code{stty} command to restore the current settings. This option
may not be used in combination with any line settings.
@end table