How do you send a pop-up message to a LINUX KDE or GNOME user?

How do you send a pop-up message to a user who is currently logged in using the KDE or GNOME desktop?  I want to do this while logged in remotely as a super user using ssh.  I know there has to be an easy command in BASH to do this.
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nedvisConnect With a Mentor Commented:
type command:
press <ENTER>

then type:
your message

hit <ENTER>
excerpt from  man wall :
       wall -- send a message to everybody's terminal.
       wall [-n] [ message ]
       Wall  sends a message to everybody logged in with their mesg(1) permis&#8208;
       sion set to yes.  The message can be given as an argument to  wall,  or
       it can be sent to wall's standard input.  When using the standard input
       from a terminal, the message should be  terminated  with  the  EOF  key
       (usually Control-D).
       The length of the message is limited to 20 lines.  For every invocation
       of wall a  notification  will  be  written  to  syslog,  with  facility
       LOG_USER and level LOG_INFO.
       -n     Suppresses  the  normal  banner  printed by wall, changing it to
              "Remote broadcast message".  This option is only  available  for
              root   if  wall  is  installed  set-group-id,  and  is  used  by
       Wall ignores the TZ variable - the time printed in the banner is  based
       on the system's local time.
other option is to install talk-client and talk-server
Talk client for one-on-one Internet chatting
The talk package provides client and daemon programs for the Internet
 talk protocol, which allows you to chat with other users on different
 systems.  Talk is a communication program which copies lines from one
 terminal to the terminal of another user.
 Install talk if you'd like to use talk for chatting with users on
 different systems.
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thomaswrightAuthor Commented:
The wall command works well for console users but it doesn't seem to do anything on the kde screen of the linux computer when I attempt it. Talk is the same thing - a console chat (unless there is something I am not aware of).
"but it doesn't seem to do anything on the kde screen of the linux computer when I attempt it"
Strange , because once I type  wall "my message"
Kwrited pops up telling it is listenning on Device /dev/pts/0 ( ine window tile) and with
"my message" displayed in the pop-up window.

I'm using PCLinuxOS Test 2 but I know it works on SUSE 10.2 without any problems.

What happens when you change to /usr/bin  directory where wall executable is located?

kwrited is supposed to allow the user to receive write,talk and ytalk messages from ttys or from other users logged in in X sessions.
thomaswrightAuthor Commented:
I see what's  happening now.  You are correct, it does work properly when using the command:

$ wall -d "My Message Text"

and DOES pop up on the KDE clients.  It didn't pop-up on the GNOME client because kwrited is not in the GNOME configuration.
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