Web server - Book I Chapter 4 Trying Out Linux Playing
Wednesday, August 22nd, 2007Book I Chapter 4 Trying Out Linux Playing with the Shell 115 For a colored background, select the No Picture radio button. From the Colors drop-down list, you can select either a single color background or a variety of color gradients (meaning the color changes gradually from one color to another) or a picture (an image used as a background). You can then pick the two colors by clicking the color buttons that appear under the Colors drop-down list. After making your selections, click Apply to try out the background. (If you don t like what you get, click Reset to revert back to the previous background.) If you want to use a picture as background, select the Picture radio button and then click the folder icon next to that radio button. A dialog box comes up, showing the JPEG images in the /usr/share/wallpapers directory. You can select any one of these images or pick an image from another directory and click OK. Then click the Apply button in the KDE Control Center to apply this wallpaper to the desktop. If you don t like the appearance, click Reset. Logging out of KDE When you re done exploring KDE, log out. To log out of KDE, choose Main Menu.Logout. You can also right-click empty areas of the desktop and choose Logout from the context menu that appears. Playing with the Shell Linux is basically UNIX, and UNIX just doesn t feel like UNIX unless you can type cryptic commands in a text terminal. Although GNOME and KDE have done a lot to bring us into the world of windows, icons, mouse, and pointer (affectionately known as WIMP 
, sometimes you re stuck with nothing but a plain text screen with a prompt that looks something like this (when you log in as naba): naba@linux:/etc> You see the text screen most often when something is wrong with the X Window System, which is essentially the machinery that runs the windows and menus that you normally see. In those cases, you have to work with the shell and know some of the cryptic Linux commands. You can prepare for unexpected encounters with the shell by trying out some Linux commands in a terminal window while you re in the GNOME or KDE GUI. After you get the hang of it, you might even keep a terminal window open, just so you can use one of those cryptic commands simply because it s faster than pointing and clicking. (Those two-letter commands do pack some punch!)
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