Messaging a system across network

[KingKen]

what command do you use to send messages across a network from the command line interface? Also how do you use it?

[pronerd]

what command do you use to send messages across a network from the command line interface? Also how do you use it?

That would depend. What type of messages do you want to send, to what type of computer, using what protocol, etc?

[micmast]

I assume you are on windows (since 90% of the world uses that os), then you can use the net send command. Mind you, this will only work if the service is enabled on the receiving end of the computer (by default this is disabled since winXP sp2 I think)