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Creating Notification Windows on Your LAN Computers

  • Episode 309
  • August 20, 2013
Chat Logs Download Video (914.26 MB) Download MP3 (74.43 MB) Donate

Learn to send handy little popup windows to both Linux and Windows computers (from computers of the same OS) on your LAN.

This episode is sponsored in part by: Eco Alkalines.

Topics Covered:

  • Robbie Ferguson and Hillary Rumball present live from the Category5 studios in Barrie, Ontario.
  • {play 3:13}Hillary Rumball receives an iPod Touch as a gift from a viewer.
  • Thank you to viewers who have been able to provide donations this week. We are saving up for renovations to build a new studio space.
  • {play 6:39}Greetings to new registered viewers.
  • {play 9:02}Why Robbie would like to remote into your computer using TeamViewer.
  • {play 10:35}Prize Giveaway: NewerTechnology 7-port USB 2.0 Powered Hub.
  • {play 14:36}Feature: Responding to Pals98's email asking, "Is there any way to send popup messages to any PC on a home network?"
    • {play 16:14}Sending notifications to a Windows 7 machine from another Windows 7 machine.
      • Enabling AllowRemoteRPC in the registry using regedit. Note: Always have a backup of your registry before you edit it. This can be done via the export feature on the "File" menu.
      • Adding Message Utility (c:\Windows\System32\msg.exe) as a trusted application for LAN communications in the Windows 7 firewall.
      • Using Credential Manager to add the recipient computer credentials so you are able to send messages to that computer.
      • Sending a message with the following command (where laptop-win7 is the hostname of the recipient computer and "test" is your message):
        msg /server:laptop-win7 * "test"
      • Another great way to send messages to and from various Windows computers (and can be a mix of XP, Vista, 7, 8, etc.) try Zhorn Software's "Stickies" application, which is available as a free download.
    • {play 21:31}Sending notifications to a Linux machine from any other computer (yes, you can even send from a Windows or Mac computer: you just need to install a terminal application to allow SSH access—PuTTY is a good example for Windows).
      • Sending a notification window on the local Linux computer with the command (where "test" is your message):
        xmessage -button ok -center "test"
      • Installing libnotify-bin to give you the notify-send command on Linux.
      • Sending a notification on a Linux machine using notify-send, which uses the modern notification system (where "test" is your message):
        notify-send "test"
      • Making it so notify-send does not time out automatically.
      • Adding a title line to your notification window with notify-send.
      • Installing openssh-server so your other computers can connect to this Linux machine to send notification messages.
        sudo apt-get install openssh-server
      • Connecting to your computer over SSH to allow displaying of notification windows.
      • Using the above commands (xmessage, notify-send) over the SSH connection will error out with something such as "Cannot open display", because your SSH session is not directly connected to the X session (the GUI / Desktop). To do this, you must specifically pipe the application to the X display with the following command:
        DISPLAY=:0
        The syntax will be (using notify-send example above as our example):
        DISPLAY=:0 notify-send "test"
      • Using Google to calculate milliseconds: https://www.google.ca/#q=5+seconds+in+milliseconds
  • {play 31:11}Google had a system-wide outage on Friday, and Robbie has the screenshots to prove it.
  • {play 33:40}Top Stories from the Category5.TV Newsroom
    • Microsoft and Google are battling it out over Google’s suspension of the Windows Phone YouTube app.
    • Mark Zuckerberg’s facebook wall was breached by a user wanting to get his attention about a security exploit.
    • The upcoming followup to the hit game Minecraft has been cancelled.
    • Some of the ads you’re seeing on YouTube might not actually be from YouTube.
  • {play 43:52}netTALK and V-Tech have teamed up for a back to school special at Walmart Canada: Get a netTALK Duo with 1 year free telephone calls in Canada or USA, plus a V-Tech phone system with 2 wireless handsets. Correction: The netTALK device in the bundle is the netTALK Duo (not the netTALK Duo WiFi). More information about this product available at http://cat5.tv/phone.
  • {play 46:08}Viewer Question: I've swtiched to Point Linux and am really love it! Would you mind doing a tutorial on getting some of the fun stuff on Point Linux? Also, is it easy to remove an OS from a triple boot setup?
    • Robbie recommends CloneZilla from clonezilla.org to create an image of your computer before messing with the partitions.
    • Check Our Web Site for tutorials we've already done surrounding Point Linux, and email us your specific questions.
  • {play 51:07}Viewer Question: I just discovered your show and am completely inspired. I'd like to start my own online show. Is Windows the best way to do things without spending an arm and a leg? What is your setup?
  • {play 57:16}The studio receives a phone call from robgor.
  • {play 58:12}Viewer Question: I would like to broadcast a video broadcast featuring a piano, where you can see the keys. Do you have any suggestions as to the type of camera and stand to use?
    • Category5 uses mic stands with a tripod head adapter to mount and maneuver its cameras.
    • Robbie has built a multi-head tripod adapter for up to 6 cameras for under $15, and it's pretty awesome.

Links to Relevant Web Sites:

  • Host: Robbie Ferguson
  • Co-Host: Hillary Rumball

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