05-01-2006
How to read arrow keys on really old bash?
I would like to get a script to respond to arrow key presses to scroll up and down a menu.
The platform is CDLinux which uses a prehistoric version of bash, version 1.14.7.
I would like to do something like "read -sn 1 keyin" but the "read" command is so primative that it only has the -r switch available so it is not possible, as far as I can see, to read single keystrokes, only whole lines.
Is there any way to detect arrow keys in this backwater of a bash shell?
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LEARN ABOUT SUNOS
gst-complete
gst-complete-0.8(1) User Commands gst-complete-0.8(1)
NAME
gst-complete-0.8, gst-complete - perform bash completion for gst-launch command lines
SYNOPSIS
complete -Cgst-complete-0.8 gst-launch
gst-complete [--gst-list-mm] [--gst-mm=string] [--print]
DESCRIPTION
gst-complete-0.8 enables bash to provide context-sensitive tab completion for gst-launch command lines. See gst-launch(1) for the syntax of
gst-launch command lines.
You must have a version of bash that supports programmable completion. Such versions of bash provide the complete built-in command.
gst-complete is a wrapper script that runs the latest installed version of gst-complete-X.X. For example, if both gst-complete-0.7 and gst-
complete-0.8 are installed on your system, gst-complete runs gst-complete-0.8.
OPTIONS
The following options are supported by gst-complete-0.8 and gst-complete:
--help Display detailed usage message. You can also use -? to specify this option.
The following options are supported by gst-complete only:
--gst-list-mm List found major/minor versions. This option displays the versions that are available.
--gst-mm=string Force major/minor version. This option enables you to specify a specific version to run, if you do not want to run the
default version.
--print Print wrapped command line. This option displays the command that will be run, and then runs the command.
EXAMPLES
Example 1: Generating the Registry of Available Plugins by Running gst-compprep
Run the following command in your .bash_profile or other appropriate place:
example% complete -C gst-complete-0.8 gst-launch
Example 2: Running the Wrapper Script and Displaying the Command Name
example% gst-complete --print
/usr/bin/gst-complete-0.8
FILES
The following files are used by this application:
/usr/bin/gst-complete-0.Executable for bash completion for gst-launch
/usr/bin/gst-complete Wrapper script that runs the latest installed version of gst-complete-X.X
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWgnome-media |
+-----------------------------+-----------------------------+
|Interface stability |External |
+-----------------------------+-----------------------------+
SEE ALSO
gst-compprep(1), gst-feedback(1), gst-inspect(1), gst-launch(1), gst-launch-ext(1), gst-md5sum(1), gst-register(1), gst-thumbnail(1), gst-
typefind(1), gst-xmlinspect(1), gst-xmllaunch(1), gstreamer-properties(1), libgstreamer-0.8(3), libgstgetbits(3)
NOTES
Original man page written by the GStreamer team at http://gstreamer.net/.
Updated by Brian Cameron, Sun Microsystems Inc., 2004.
SunOS 5.10 14 Oct 2004 gst-complete-0.8(1)