not able to output anything to /dev/ttyv8?

[Jonathan Horne]

On 6/6/07 9:17 AM, "Zhang Weiwu" <zhangweiwu at realss.com> wrote:

> On Wed, 2007-06-06 at 03:14 -0400, Michael Hauber wrote:
>> On Tuesday 05 June 2007 11:23:04 pm Zhang Weiwu wrote:
>>> Dear list
>>> 
>>> On Gentoo Linux I used to redirect the output of a certain app
>>> to /dev/tty10 and switch to tty10 (by using Alt+F10)
>>> 
>>> this is useful to keep watching the application.
>>> 
>>> this doesn't work on FreeBSD. I can do
>>> # ehco hello > /dev/ttyv8
>>> # ehco hello > /dev/ttyv9
>>> # ehco hello > /dev/ttyva
>>> 
>>> But Alt+F9, Alt+F10, Alt+F11 only cause the machine to beep
>>> 
>>> Possible to use /dev/ttyv9 for output device in FreeBSD? Thanks in
>>> advance.
>>> 
>>> Best regards
>> 
>> try 'man ttys' and edit your /etc/ttys.
> 
> It doesn't make me nervous when I have to RTFM as I did many times and,
> now I am RTFMing, but, I got a feeling I am entering a "maze" filled
> with things I don't know: termcap, bound rate...
> 
> Anyway this is how I did it after RTFM, stupid but works:
> 1) go to /etc/gettytab and add this:
> 
> W|Wd|Wd console:\
>         :ht:np:al=root:sp#9600:
> 
> 2) run /usr/libexec/getty Wd ttyv8
> 
> 3) now you can run your application and redirect to ttyv8
> 
> # app > /dev/ttyv8
> 
> This is ugly, but it works. I'd very like to see better solutions.
> 
> If you don't add that line to /etc/gettytab, run
> 
> /usr/libexec/getty Pc ttyv8
> 
> will get you a ttyv8 console that you can redirect output to, but that
> console seems ignore carrier return / line feed, making the output
> difficult to read.
> 
> P.S. I'd very much like the console ttyv8 can be at a speed of 9600, now
> it output anything almost instantly, so sometimes I cannot watch the
> output scroll with my eyes (by the special nature of the application I
> am running, glance over the output of my application when I am free can
> help me find a lot of useful information). The application produce less
> then 20MB of data, so 9600 kbps is a good measure to control the pace of
> output.
> 
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Im not sure what your application may be, but my simple solution is just to
'tail -f /path/logfile'.  This way, I can see the output of my application
from anywhere I am via ssh (not just the local tty).
-- 
Jonathan Horne 
freebsd at dfwlp.com
http://dfwlpiki.dfwlp.org