barcode for visual basic System Administration in .NET Include code-128c in .NET System Administration

System Administration use none none drawer toaccess none for barcode generation On a Linux system the syste none none m administrator is frequently the owner and only user of the system. This person has many responsibilities. The first responsibility may be to set up the system and install the software.

Once the system is up and running, the system administrator is responsible for downloading and installing software (including upgrading the operating system), backing up and restoring files, and managing such system facilities as printers, terminals, servers, and a local network. The system administrator is also responsible for setting up accounts for new users on a multiuser system, bringing the system up and down as needed, and taking care of any problems that arise..

Scan GS1 BarCodes Additional Features of Linux The developers of Linux inc none for none luded features from BSD, System V, and Sun Microsystems Solaris, as well as new features, in their operating system. Although most of the tools found on UNIX exist for Linux, in some cases these tools have been replaced by more modern counterparts. This section describes some of the popular tools and features available under Linux.

. Additional Features of Linux GUIs: Graphical User Interfaces The X Window System (also c alled X or X11) was developed in part by researchers at MIT (Massachusetts Institute of Technology) and provides the foundation for the GUIs available with Linux. Given a terminal or workstation screen that supports X, a user can interact with the computer through multiple windows on the screen, display graphical information, or use special-purpose applications to draw pictures, monitor processes, or preview formatted output. X is an across-the-network protocol that allows a user to open a window on a workstation or computer system that is remote from the CPU generating the window.

Usually two layers run under X: a desktop manager and a window manager. A desktop manager is a picture-oriented user interface that enables you to interact with system programs by manipulating icons instead of typing the corresponding commands to a shell. Fedora/RHEL includes GNOME (Figure 1-3, www. and KDE (www.kde.

org), the most popular desktop managers. A window manager is a program that runs under the desktop manager and allows you to open and close windows, run programs, and set up a mouse so it does various things depending on how and where you click. The window manager also gives the screen its personality.

Whereas Microsoft Windows allows you to change the color. Desktop manager Window manager Figure 1-3. A GNOME workspace 16 1 Welcome to Linux of key elements in a window , a window manager under X allows you to customize the overall look and feel of the screen: You can change the way a window looks and works (by giving it different borders, buttons, and scrollbars), set up virtual desktops, create menus, and more. Several popular window managers run under X and Linux. Fedora/RHEL provides Metacity (the default under GNOME) and kwin (the default under KDE).

Other window managers, such as Sawfish and WindowMaker, are also available. s 4 and 8 have more information on GUIs..

(Inter)Networking Utilities Linux network support inclu des many utilities that enable you to access remote systems over a variety of networks. In addition to sending email to users on other systems, you can access files on disks mounted on other computers as if they were located on the local system, make your files available to other systems in a similar manner, copy files back and forth, run programs on remote systems while displaying the results on the local system, and perform many other operations across local area networks (LANs) and wide area networks (WANs), including the Internet. Layered on top of this network access is a wide range of application programs that extend the computer s resources around the globe.

You can carry on conversations with people throughout the world, gather information on a wide variety of subjects, and download new software over the Internet quickly and reliably. 10 discusses networks, the Internet, and the Linux network facilities..

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