Chapter 10: Personalizing Ubuntu: Getting Everything Just Right
If you've read this book from Chapter 1, by this stage, you no doubt have become comfortable with Ubuntu. You've started to realize its advantages and are on the way to making it your operating system of choice.
Beginning Ubuntu Linux: From Novice to Professional by Keir Thomas
Apress, March 2006
That's what this chapter is all about. We look at personalizing Ubuntu so that you're completely happy with your user experience.
Ubuntu is similar to Windows in many ways, but the developers behind it introduced improvements and tweaks that many claim make the software easier to use. For example, Ubuntu offers multiple virtual desktops—long considered a very useful user-interface feature that seems to have passed Microsoft by. It also moves the programs menu to the top of the screen, leaving the whole width of the screen at the bottom to display taskbar buttons. This is very sensible, because the buttons don't look cramped when more than a handful of applications are open. However, if you're not satisfied with Ubuntu's out-of-the-box look and feel, you can change it.
You might be used to changing the desktop colors or wallpaper under Windows, but Ubuntu goes to extremes and lets you alter the look and feel of the entire desktop. Everything from the styling of the program windows to the desktop icons can be altered quickly and easily.
Ubuntu refers to the look of the desktop as a theme. Because it's built on the GNOME desktop, Ubuntu allows you to radically personalize your desktop theme. Several different themes come with the distribution, and you can download many more themes. Each lets you change the way the windows look, including the buttons and the icon set (although some themes come without additional icons).
However, unlike Windows themes, most GNOME themes don't change the fonts used on the desktop, and the wallpaper and color scheme will probably remain broadly the same. You can change these manually, as described in the “Setting Font Preferences” and “Changing the Wallpaper” sections a bit later in this chapter.
To alter the theme, select System→Preferences→Theme. Then it's simply a matter of choosing a theme from the list in the Theme Preferences dialog box, as shown in Figure 1. A useful hint is to open a Nautilus file browser window in the background (Places→Desktop), so you can see how the changes will affect a typical window.
Note: The default Ubuntu theme is called Human and is designed to represent the skin tones of the world's population. This is intended to reflect Ubuntu's mission of being accessible to everyone, no matter where or who they are.
My favorite themes are Clearlooks and Mist, largely because they're simple and uncomplicated. Remember that you'll be working with the theme on a daily basis, so it should be practical and not too distracting. Those miniature close, minimize, and maximize buttons might look stylish, but they're useless if they're so small that you can't reliably click them with your mouse.
As well as changing the overall theme, you can also modify individual theme components, and even download more theme components.
You can alter the three aspects that constitute a GNOME theme: the controls (sometimes known as widgets), the window borders, and the icons. Controls are simply the elements you click within dialog boxes and windows: buttons, scroll bars, and so on. The window borders are, as seems obvious, the borders of program windows and dialog boxes, with particular attention paid to the top of the window, where the program name appears along with the minimize, maximize, and close buttons.
Note: To make matters a little confusing, some window borders have their own selection of close, minimize, and maximize controls, which can't be overridden with individual selections for controls.
To make changes to a theme, click the Theme Details button in the Theme Preferences dialog box (Figure 1), and then click each tab to see your choices, as shown in Figure 2. Unfortunately, there are no thumbnail previews of each style, but as soon as you click each option, it will be automatically applied to the currently open windows. To preview the effects fully, the best policy is to keep a Nautilus window open (Places→Desktop).
When you've made your choices, you can save the theme for further use. Simply click the Save Theme button in the Theme Preferences dialog box. You'll need to give the theme a name and, if you wish, a short description for future reference. If you don't save the theme, as soon as you select another one, the changes you made will be lost.
Practical Task Scheduling Deployment
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One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
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With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide