How to make a variable and read from second terminal?

[Pithikos]

I always wondered about this but never found a way to do it. Say I have two terminals open and I want to save the current path in a variable and read it from the second terminal that I have open. Then in the first terminal I type:

A=$(pwd)

And in the second I type:

echo $A

that doesn't work though. I have tryied also with

export A=$(pwd)

and

alias A=$(pwd)

but nothing seems to work. Is there a way to do this?

[piratebill]

Variables created in a bash session stay within that session only. Other than saving the value of pwd to a file, the second terminal wont be able to get it.

[Pithikos]

Variables created in a bash session stay within that session only. Other than saving the value of pwd to a file, the second terminal wont be able to get it.

Thanks for your reply. You sir saved me from a headache

[btindie]

The only way you could do is if it was a sub process of the parent e.g.

Start a new terminal then type the following:

$ export MSG="Hello World"
$ gnome-terminal

From the newly created terminal type

$ echo $MSG

Or you can use sockets

$ A=$(nc -l 1234)
$ echo $A

$ pwd | nc localhost 1234

but then I'm going way OT....

[Pithikos]

The only way you could do is if it was a sub process of the parent e.g.

Start a new terminal then type the following:

$ export MSG="Hello World"
$ gnome-terminal

From the newly created terminal type

$ echo $MSG

Or you can use sockets

$ A=$(nc -l 1234)
$ echo $A

$ pwd | nc localhost 1234

but then I'm going way OT....

Wow! That nc was such a neato thing!! I playied a bit with it and "I'm lovin it"! Finally understood also what the export is all about