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Windows views text files as just another file type, but to Ubuntu (and to the whole Linux family in fact), they are the very fabric of which the system is made. Configuration files and program documentation are stored as plain text. This is clearly different from Windows, where any information you re supposed to read will likely be contained in a Windows help file, a rich text format (RTF) file, or even a Microsoft Word document. So important are text files to Linux that for a long time you could have been caught in a heated debate . . . over which text editor was the best! And while traditionally text files were managed with command-line tools and text editors, the focus of this chapter is on introducing graphical tools such as gedit. No doubt one day you will get to grips with command-line text editors such as Vim, Emacs, or even both but right now the thing is to get you up and running with Lucid Lynx! It s worth mentioning that text files under Linux usually don t have a file extension. Unlike with Windows or other OSs, the .txt file extension is rarely used. Sometimes a .conf extension is added to plain text configuration files, but more often text files have no extension at all.

Next, in the for i in ... loops a temporary variable with the name i is defined. You can understand the use of this variable as for each element in... , whereby every element in turn is temporarily put in the variable i. Now, for every element encountered in $* in the first loop, the command echo $i is executed. The result of this is that the name of the element (which is an argument in this script) is echoed to the screen. The difference between $* and $@ becomes clear from this example. Where just one element is seen in the first loop, every argument is treated as an element on its own in the loop that uses $@. So, to make sure that from a range of arguments every argument is treated as an argument on its own, use $@.

Listing 10-2. Joining the Tournament and Entry Tables SELECT * FROM Tournament t INNER JOIN Entry e ON t.TourID=e.TourID

Given this reliance on text and text files, it has always been very important for Linux administrators and power users alike to have powerful text-manipulation tools at their fingertips.

Tip Most program README files, along with other assorted documentation, can be found in a directory named after the program in question within the /usr/share/doc directory.

Variables play an important role in creating a good working shell script. In the previous section, you learned how variables are used to store the arguments that are entered when activating a script. And you can define variables in other ways as well. In this section we ll explore more of the possibilities when working with variables.

You can add either just the Applications menu or the entire set of menus (Applications, Places, and System) to the panel at the bottom of the screen. This can help those who long for the Windows Start button approach to access programs.

The result shown in Figure 10-5 is certainly helpful. We can see the entries and the names of the corresponding tournaments. We can see from the first two rows that members 118 and 228 have entered a Leeston tournament. Now we need to find out whether 118, 228, and other members, entering the tournament are men and find their names. We can get this additional information by joining the virtual table in Figure 10-5 to the Member table on the MemberID fields. Listing 10-3 shows the SQL, and Figure 10-6 shows the result. I haven t included all the columns in Figure 10-6 because there are a lot of them. You will see shortly why I like to leave all the columns in as long as possible.

To add the Application, Places, and System menus to the panel at the bottom of the Ubuntu desktop, follow these steps: 1. 2. Right-click a blank spot on the bottom panel and select Add to Panel. In the dialog box that appears, click the Menu Bar option to add all three menus. You ll find this under the Utilities heading in the list; you ll need to scroll down to see it. Click the Add button at the bottom of the dialog box. Click the Close button.