From: "Iñaki Baz Castillo" Date: 2010-01-15T18:17:53+09:00 Subject: Re: Notifying via Terminal in Linux El Viernes, 15 de Enero de 2010, Jonathan Nielsen escribió: > >> 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). > > Yes, use popen3 to get a reference to stdin of the wall process and > write into the stdin. Should work anyway... With popen4 you also get the correct exit status code of the command :) -- Iñaki Baz Castillo