To really push the limits of transparency you will need to have Compiz working. For more information on Compiz check out my articles: “Enabling the Cube in Compiz” and “Configuring the appearance of the Compiz Cube“. You might also want to check out my article “Add Emerald for slick window decorations” to get the full effect of transparent titlebars and window decorations. As well you can check out my article “Avant Window Navigator: OS X-like dock on Linux desktop” if you’re wanting to mimic my personal desktop.

The big picture

Figure 1

I thought I would start out by showing you the desktop I am working with so you can decide if this is something you want to achieve. Figure 1 shows the end result of the configurations (Click on the image to see the full-size version).

The tools to will use

In order to get the transparency you see in the image the following configuration tools will be used:

Compiz Settings

Panel properties

The following themes will be used:

GNOME: Dust Sand

Avant Window Navigator: Glass 3D

Emerald: Gabriel

Wallpaper: Awesome Wallpapers Ubuntu Charcoal

I am going to assume you know how to install the various themes and wallpaper used, so I won’t go over those topics.

Configurations

Figure 2

The first thing to take care of happens to be the easiest – the GNOME panel. You will notice I removed the bottom panel on my desktop and replaced it with the Avant Window Navigator. So the only GNOME panel to deal with is the upper panel. To set the transparency on this right click an empty spot in the panel and select “Properties”. When the Properties window opens (see Figure 2) click on the “Background” tab and do the following:

• Check the Solid Color radio button.
• Slide the Style bar to the left until it is as transparent as you like.
• Click Close.

Your panel should now be transparent.

Compiz

Figure 3

Now that your panel is transparent you don’t want to ruin the over all look by having solid menus and/or drop downs. So let’s take care of these pieces.  The first thing to do is open up the Compiz Settings tool. You will find this in the Preferences sub-menu of the System menu.  When the settings window is open you will want to click on the Opacity Brightness and Saturation section (see Figure 3).

What you need to do is add new Window specific settings. When you click the New button a small window will open where you add the type of “window” you want to set transparency for. When the window opens you want to add the following line to get Menus, Drop down windows, and popups set for transparency:

(type=Menu) || (type=PopupMenu) || (type=DropDownMenu)

Once you have that entered, set the transparency level to 67 (to match what you see in this article) or to whatever level you desire.

And that’s it. You should now have full-on transparency on your desktop.

Final thoughts

Of course you can take this farther. You can even set application windows as transparent as you like. The only problem with that is you need to be able to clearly see your work.

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Fortunately Linux has grown up quite a bit so it’s not that difficult to start an application. In fact, I would argue that starting an application in Linux is easier than it is in Windows. How can I say that? Well, why don’t we examine the various ways you can start an application within Linux and you can make the judgment yourself.

Command line

We’ll start with the more challenging first. Not that the command line is difficult, but it’s not nearly as easy as finding a menu entry and selecting it.

If you’ve been following me enough you probably have read an instance where I have mentioned global commands. A global command is a command that is located within your users’ $PATH. NOTE: You can learn more about this in my article  “Adding directories to your $PATH“. To find out what directories are in your $PATH issue the command echo $PATH. What you see printed out at your prompt are all of the directories which contain commands you can run from anywhere on your system. There may be times when you do not install an application within your path. For those applications you have to enter the explicit path to the executable command. Let me explain…

Say you install the beta version of Firefox (for testing purposes) in the /opt directory. So now you will have a directory /opt/firefox and within that directory is the executable command firefox. Since /opt isn’t in your $PATH, if you execute only firefox what will start up is the default firefox on your system. In order to start up Firefox installed in /opt you will have to execute the command /opt/firefox/firefox.

Now let’s say you are looking for the apt command to add a gpg key but you’re not sure of the name. You are sure, however, of two things: It is in /usr/bin and it has the string “key” in the command. You could issue this command to find all matching commands:

ls /usr/bin/*key*

which will list all commands in /usr/bin that contain the word “key”. In that listing you will see apt-key. You now know the name of the command.

GUI

There are two main (and universal) ways to start up an application in Linux. The first, and easiest, is to look through your main menu for that command’s entry. Once you find that command you simply select it to open up the application. One of the issues that is not a universal truth in Linux is menu layout. All Linux desktops lay out their menus differently. But for the most part they hold true to some similarities (Primarily the grouping of applications into submenus like “Office”, “Networking”, “Graphics”, “Games”, etc.)

The next universal method of starting up an application is to open up your desktops’ file manager, navigate to the directory that contains the executable, and double click on the executable. This is much like it is in Windows. Most often you will be navigating to /usr/bin to find these executables.

NOTE: If a command requires a terminal to run you can not run it in this method. The only commands you can start up this way are graphical commands.

Run prompt

Figure 1

In some desktops you will have a “Run prompt” within your Start menu. In GNOME and KDE you can open up this dialog by pressing Alt-F2. In my favorite distribution, Elive Compiz, I set this to the Windows Key+F1. Figure 1 shows the Run Dialog in Elive. As you can see I want to start the game Torus Trooper. I start to type “torus” and the first matching entry pops up which I can click on to start up the application.

Final thoughts

Of course this is Linux so there are many more ways you can find to start up an application. You can create keyboard shortcuts for just about anything or, in some desktops, you can create desktop Icons. In some desktops you can create specific shelves for applications or add mini launchers. But, in general, the methods outlined above will get you through the day in Linux.

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