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-   -   Terminal Questions? "cat /dev/tty1" Why Not? (https://www.linuxquestions.org/questions/linux-newbie-8/terminal-questions-cat-dev-tty1-why-not-294448/)

chris318 02-24-2005 03:43 PM

Terminal Questions? "cat /dev/tty1" Why Not?
 
How come I can echo a tty device by doing "echo hello > /dev/tty1", but I can't cat a tty device? If I try to do a "cat /dev/tty1" in tty2 for example I don't see the output of tty1. I'm doing this as root by the way.

Lets say I log into X from tty1 using startx. I then go into an X session. Now I go to tty2 and type startx -- :1 and start anothr X session. alt F7 and alt F8 are my X session. What is the equivalent tty devices created on F7 and F8?

Now while I'm in X I start up xterm. The device now is /dev/pts/1. What type of terminal is this and what relation does it have to the requaler tty's?

While I'm in xterm I would like to see the logging output of X and the window manager going to tty1. How come "cat /dev/tty1" doesn't give the desired results? How can I redirct all output going to tty1 to /dev/pts/1?

eduardomsilva 02-24-2005 06:54 PM

Hello!

Try "cat < /dev/tty1" and "dev/pts/1</dev/tty1"

It should work!!

See you!

/edu

chris318 02-24-2005 07:08 PM

??? huh

cat /dev/tty1 and cat < /dev/tty1 are the same thing dude.

The first one say cat tty1 and the second says the input to cat is tty1. Identical?

File1:
a
b
c

Then do, cat File1 ...
a
b
c

Then do, cat < File1 ...
a
b
c

Same thing bro.

Anyway, cat < /dev/tty1 doesn't do anything either.

chris318 02-24-2005 10:59 PM

Wow I gues my question is to advanced for you linux guru's. Nobody has any ideas on how to cat or tail or head or tee a tty device and see it's output in a different terminal?


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