From: "Iñaki Baz Castillo" <ibc@...>
Date: 2010-01-15T10:46:49+09:00
Subject: Re: Notifying via Terminal in Linux

El Viernes, 15 de Enero de 2010, Kurtis Rainbolt-greene escribió:
> So I've got this idea for a linux CLI program, and one of the things I
> want the program to do is notify Users of an event via the terminal.
> 
> Is there something out there I can use to do this? I was thinking of
> using the WALL command, but that seems sloppy and requires reading from
> a file (for ubuntu).

WALL command doesn't require reading from a file, it reads the STDIN.

When you do "wall < FILE" you are redirecting the STDIN to the file, so the 
content of the file is passed to wall via STDIN.

When you run "wall" (just "wall") you must insert text with the keyboard and 
press Ctrl+D to exist and deliver the message.

So in Ruby you could redirect the STDIN (better $stdin) to invoke the system 
command (not sure now how to achieve it but sure it's possible).


-- 
Iñaki Baz Castillo <ibc@aliax.net>