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Automated login, but run in a telnet console? possible?

Hi,

I have developed an embedded Linux system (app) which does its job well. My app is executed from inittab (using a script) so it automaticly starts, and it outputs some debug info to /dev/tty1 using the "printf" command. (Note, I do not have tty1 listed in my inittab, so that console is not used by getty at the moment)

So, locally, I can see my app's output (status) on tty1, and I can login using tty2/tty3 to do some stuff if needed.

Here comes the tricky part:

When doing remote fixing/monitoring, I login using telnet, so I am on the telnet console (pts/1). I have no way of seeing the app's output messages on tty1.

My question: Is it possible, using automatic login, to let Linux login to the 1st telnet console (pts/1) so my output messages are visible there, and so after I login with telnet, can I see my app's status then?

(I am afraid, that pts/1 is created dynamically (on telnet login) so this idea of mine probably won't work ...)

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Maybe I am really stupid and this is all garbage I just typed. If so, could anyone point me to a solution (a simple one) where I can log in with telnet and see the output of some app (or my app).

Many regards,

Bonny

Reply to
Bonny Gijzen
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Check out the GNU screen program, it may be able to do what you want.

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Mark

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Reply to
Mark

Hi Mark,

Thanks for your reply. Yes, I know this Screen program, but that last time I looked at it (or some equivalent?) it took way too much resources for my embedded system.

Look, I could also write the output of my app to some file in ramdrive or perhaps create a HMTL page with my output, which could remotely be read using httpd ....

But I thought by simply automate login and select some console (telnet prefered) would be the most easy and least resources solution

Pls prove me wrong :)

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Many regards,

Bonny

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Reply to
Bonny Gijzen

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You could just write a simple "telnet server" and have it communicate with your app via pipes and with a telnet client via tcp. The server can be pretty stupid - just accept a connection and direct everything it received on socket to the app stdin via pipe and similarly in the other direction for app output.

Regards Darryl.

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Reply to
Darryl Green

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