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Mounting CD-ROMs and Floppy Disks from the Desktop
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Red Hat created desktop icons for your CD-ROMs and floppies when it installed KDE. Floppy and CD-ROM icons are displayed on the left side of your KDE desktop. To access a CD-ROM disk, place the CD-ROM disk in your CD-ROM drive and click the CD-ROM icon. The file manager window then opens, displaying the contents of the CD-ROM's top-level directory. You can also right-click the icon to display a pop-up menu with an entry to mount or unmount the disk. When the CD-ROM holds a mounted CD disk, the CD-ROM icon displays a small red rectangle on its image. Unlike on Windows systems, the CD-ROM disk remains locked in the CD-ROM drive until you unlock it. To unmount the CD, right-click the CD-ROM's icon and select Unmount from the pop-up menu. You can then open the CD-ROM drive and remove the CD. To access a floppy disk, you can perform a similar operation using the Floppy Disk icon. Place the floppy disk in the disk drive and click the Floppy Disk icon. This displays a file manager window with the contents for the floppy disk. Or, you can right-click the icon to display a pop-up menu with an entry to mount the disk. Once it is mounted, you can access it, copying files to and from the disk. Be careful not to remove the disk unless you first unmount it. To unmount the disk, right-click its icon and select Unmount from the icon's pop-up menu. You can perform one added operation with floppy disks. If you put in a blank disk, you can format it. You can choose from several file system formats, including MS-DOS. To format a standard Linux file system, select the ext2 entry.
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A desktop file you use for your CD-ROM is a special kind of desktop file designed for file system devices. Should you add a new CD-ROM or floppy drive, you can create a new desktop file for it to enable you to access the drive from your desktop. To create one, first right-click anywhere on the desktop, select New, and then select either CD-ROM Device for a CD-ROM drive or Floppy Device for a floppy drive. This opens a Properties window with tabs for General, Permissions, and Device. In the General tab you can set the name for the device icon that will appear on the desktop as well as choose the icon you want to show for a mounted CD-ROM or floppy disk (a default is already provided). On the Device panel, you select the actual device, its mount point on your file system, and the type of file system it will mount, as well as the icon used to indicate when it is unmounted (see Figure 9-6). On the Permissions panel, you can also indicate the permissions that have been set to allow access to the device. See the chapter on file administration, 32, for a discussion on devices and file systems. The desktop file does not perform the necessary system administration operations that enable access to the CD-ROM by ordinary users. Normally, only the systems administrator (root user) can mount or unmount CD-ROMs and floppy disks. You also must make sure an entry is in the /etc/fstab file for the CD-ROM or floppy drive. If not, you have to add one. Such operations are fairly easy to perform using the file system management tools provided by Linuxconf and fsconf. Check 4 and 32 for the procedures to use.
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Figure 9-6: The Desktop dialog box for CD-ROM devices
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KDE File Manager and Internet Client: Konqueror
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The KDE file manager is a multifunctional utility with which you can manage files, start programs, browse the Web, and download files from remote sites (see Figure 9-7). Traditionally, the term "file manager" was used to refer to managing files on a local hard disk. The KDE file manager extends its functionality well beyond this traditional function because it is Internet capable, seamlessly displaying remote file systems as if they were your own, as well as viewing Web pages with browser capabilities. It is capable of displaying a multitude of different kinds of files, including image, postscript, and text files. KOffice applications can
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be run within the Konqueror window. With KDE 2.2, the original KDE file manager, kfm, was replaced by a new file manager called Konqueror.
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Figure 9-7: The KDE file manager A KDE file manager window consists of a menu bar, a navigation toolbar, a location field, a status bar, and a sidebar that provides different views of user resources, such as a tree view of file and directory icons for your home directory. When you first display the file manager window, it displays the file and subdirectory icons for your home directory. Files and directories are automatically refreshed. So, if you add or remove directories, you do not have to manually refresh the file manager window. It automatically updates for you, showing added files or eliminating deleted ones. The files listed in a directory can be viewed in several different ways. You can view files and directories as icons, small icons, or in a detailed listing. The detailed listing provides permissions, owner, group, and size information. Permissions are the permissions controlling access to this file (see 12). Configuration files are not usually displayed. These are files beginning with a period and are often referred to as dot files. To have the file manager display these files, select Show Dot Files from the View menu. The sidebar lists different resources that a user can access with Konqueror. The sidebar has both a classic and extended version. You can select which one to use from the Window menu. In the classic version, resources such as file manager history, bookmarks, and your home directory are listed in an expandable tree. Click an entry to expand it. Double-click to access it with Konqueror. For example, to move to a subdirectory, expand your home directory entry and then double-click the subdirectory you want. Konqueror will now display that subdirectory. To go to a previously bookmarked directory or Web page, find its entry in the Bookmarks listing and select it. The extended sidebar features a vertical button bar for displaying items such as your file manager history, home directory, bookmarks, and network resources. The History button lists the network resources and directories you have accessed, including Web pages. The Network button will list network resources you have access to, such as FTP and Web sites. The Folder button will display your system's root directory. If Multiple Views are enabled, you can display several of these at once, just by clicking the ones you want. If Multiple Views are not enabled, then the previous listing is replaced by the selected one. Turn off a display by clicking its button again. The last button is a Classic Sidebar button which will display all of the resources in an expandable tree, like the classic sidebar does.
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To configure the extended sidebar, click on its Configure button in the Sidebar Button bar. Select the multiple views entry to allow the display of several resource listings at once, each in their separate sub-sidebar. You can also add a new resource listing, choosing from a bookmark, history, or directory type. A button will appear for the new listing. You can rightclick the button to select a new icon for it or select a URL, either a directory pathname or a network address. To remove a button and its listing, right-click on it and select the Remove entry. To search for files, select the Find entry in the Tools menu or click on the Looking Glass icon. This opens a pane within the file manager window in which you can search for filenames using wildcard matching symbols, such as *. Click the Find button to run the search and on the Stop button to stop it (see Figure 9-8). The search results are displayed in a pane in the lower half of the file manager window. You can click a file and have it open with its appropriate application. Text files are displayed by the Kate text editor. Images are displayed by KView, and postscript files by KGhostview. Applications are run. The search program also enables you to save your search results for later reference. You can even select files from the search and add them to an archive.
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Figure 9-8: The KDE Search tool You can open a file either by clicking it or by selecting it, and then choosing the Open entry in the File menu. A single-click, not a double-click, opens the file. If you want to select the file or directory, you need to hold down the CTRL key while you click it. A selection is performed with a CTRL-click. If the file is a program, that program starts up. If it is a data file, such as a text file, then the associated application is run using that data file. For example, if you click a text file, the Kate application starts displaying that file. If Konqueror cannot determine the application to use, it opens a dialog box prompting you to enter the application name. You can click the Browse button on this box to use a directory tree to locate the application program you want. The file manager can also extract tar archives and install RPM packages. An archive is a file ending in .tar.gz, .tar, or .tgz. Clicking the archive lists the files in it. You can extract a particular file simply by dragging it out the window. Clicking a text file in the archive displays it with Kate, while clicking an image file displays it with KView. Selecting an RPM package opens it with the kpackage utility, which you can then use to install the package.
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