Wall command

[shaell]

Hi,

(1)Does ne body know what port does the "wall" command uses to send message to all the terminals.

(2) Is there any command that i can send a message to only a particular IP address (Host)

Thanks

Shaell

[Tortanick]

I can't figure out what port it is, but if you know how you could block all ports then use wall, then read the firewall logs.

As for just one user, try useing write. http://www.hmug.org/man/1/write.php

wall -g will send to a group.

But no idea how to send to an IP address.

[strello]

You talk about the "wall" command which broadcasts messages to all terminals. If you wanna send a specific message to one terminal,, try this.

Log in as root user

example: echo "how you doing today" > /dev/tty5

this will send the specific message to terminal 5, or whatever terminal you choose. Hopefully this helps.

[z1p]

Hi shaell,

wall does not use any ports as it only 'broadcasts" to terminals on a single machine. It does not send messages from one machine to another. I don't know of any generic Unix tools that provides messaging between systems.

[kage]

For messaging between systems, you might look into something like ssh + party.