Syslinux - Feb 2014 - showing informations in menu

Is there a way to show some bits of information in the menu, like Syslinux
version, MAC address and IP address? When the menu is loaded at startup,
this information is quickly erased and is not easily readable.

-- 
Alexandre Blanchette <blanalex at gmail.com>

Alexandre Blanchette <blanalex at gmail.com> writes:
> Is there a way to show some bits of information in the menu, like
> Syslinux version, MAC address and IP address? When the menu is loaded
> at startup, this information is quickly erased and is not easily
> readable.
I suppose you use menu.c32.  Exit the menu with ESC then press Ctrl-V
and Ctrl-N.  From syslinux.doc:

   ++++ COMMAND LINE KEYSTROKES ++++

The command line prompt supports the following keystrokes:

<Enter>         boot specified command line
<BackSpace>     erase one character
<Ctrl-U>        erase the whole line
<Ctrl-V>        display the current Syslinux version
<Ctrl-W>        erase one word
<Ctrl-X>        force text mode
<Tab>           list matching labels
<F1>..<F12>     help screens (if configured)
<Ctrl-F><digit> equivalent to F1..F10
<Ctrl-C>        interrupt boot in progress
<Esc>           interrupt boot in progress
<Ctrl-N>        display network information (PXELINUX only)
-- 
Feri.

> Is there a way to show some bits of information in the menu, like Syslinux
> version, MAC address and IP address? When the menu is loaded at startup,
> this information is quickly erased and is not easily readable.
 
In a Syslinux boot prompt you can use <ctrl>+<v> to show the
Syslinux
version.

Additionally, there are several c32 modules capable of providing 
diverse information.

And of course you can use Hardware Detection Tool, for example by 
means of hdt.c32.

Regards,
Ady.

On Fri, Feb 21, 2014 at 2:50 AM, Ferenc Wagner <wferi at niif.hu> wrote:
> Alexandre Blanchette <blanalex at gmail.com> writes:
>
> > Is there a way to show some bits of information in the menu, like
> > Syslinux version, MAC address and IP address? When the menu is loaded
> > at startup, this information is quickly erased and is not easily
> > readable.
>
> I suppose you use menu.c32.  Exit the menu with ESC then press Ctrl-V
> and Ctrl-N.  From syslinux.doc:
>
>    ++++ COMMAND LINE KEYSTROKES ++++
>
> The command line prompt supports the following keystrokes:
>
> <Enter>         boot specified command line
> <BackSpace>     erase one character
> <Ctrl-U>        erase the whole line
> <Ctrl-V>        display the current Syslinux version
> <Ctrl-W>        erase one word
> <Ctrl-X>        force text mode
> <Tab>           list matching labels
> <F1>..<F12>     help screens (if configured)
> <Ctrl-F><digit> equivalent to F1..F10
> <Ctrl-C>        interrupt boot in progress
> <Esc>           interrupt boot in progress
> <Ctrl-N>        display network information (PXELINUX only)
> --
> Feri.
>
Thanks for the tip. However, Ctrl-N does not show network information.

I've found the following undocumented keystrokes in pxelinux.0 (I don't
know about the other variants of SYSLINUX):
Ctrl-R      Prompt changes to "(reverse-i-search)'': "
Ctrl-I      Displays available labels
Ctrl-A      Move the cursor at the beginning of the line
Ctrl-D      Erases one character after cursor
Ctrl-F      Move the cursor at the end of the line
Ctrl-H      <Backspace> equivalent
Ctrl-J      <Enter> equivalent
Ctrl-K      Erases text from the cursor up to the end of the line
Ctrl-L      Clear screen
Ctrl-N      Execute last command
Ctrl-M      <Enter> equivalent

Syslinux.doc and the wiki should be updated, but I'd like Ctrl-N to be
implemented as documented (display network information)