Question

In GNU/Linux (I'm using Arch), how do you make stdin and stdout go in one terminal, and stderr go exclusively in another terminal? I think this is a simple command but I dont know it :(

Answer 1

Maybe using tee or pipe into /dev/tty. I am not able to test them right now, just some ideas.

Answer 2

To redirect stderr (file descriptor 2), the syntax is: 2>/dev/null
This trashes anything going to stderr. Like bmp alluding to, you may be able to redirect it to the target tty's device file.

Answer 3

how do I know which tty file belongs to whatever xterm/rxvt window ?

Answer 4

So, the better way to do this is to probably direct them to two different files and then tail those files in a terminal. So when you execute your program you would write something like...

$ ./program > std.out 2> std.err

Then in one terminal...

$ tail -f std.out

And in another

tail -f std.err

Answer 5

Er. Forgot the prompt in my second example, but you get the idea.

Answer 6

http://www.aboutlinux.info/2006/01/inputoutput-redirection-made-simple-in.html

http://www.linuxsa.org.au/tips/io-redirection.html

Answer 7

phillips13, I don't believe those links directly answer his question.

Answer 8

Thanks guys!! your commands worked fine (although I tried less +F over tail so I can scroll up :-D)