X

X clients

command line options for, 655–657

configuring to start with GNOME desktop, 667

default, 654

defined, 817

troubleshooting scenarios for, 669

xterm program for, 657

X Display, 817

X Font Server, 674

X servers, 817. See also X.org servers

X Window System, 650–690

about, 650–651

clients and servers with, 651–653

command line options for X clients, 655–657

defined, 817

desktops and window managers, 677–681

hardware supported for, 653–654

lab questions and answers, 685–686, 688–690

running remote X applications, 675–677

self test and answers, 684–685, 687

starting X server without window manager, 654–655

summarized, 682

tools for X.org configuration, 670–674

troubleshooting, 666, 745

two-minute drill, 683

using customized .xinitrc file, 668–669

XFree86 and X.org system, 650

X.org server configuration, 658–669

xdm display manager, 663

Xen

about, 377, 817

Xen-based virtualization, 76, 109

XFree86, 650

xfs service script, 674

xhost command, 818

xinetd (Extended Internet Services Daemon), 614–620

default settings in generic configuration file, 616–618

defined, 818

enabling Telnet with, 620

lab questions and answers, 641–642, 644–647

network security and, 47

self test and answers, 640–641, 643

standard parameters for, 619

summarized, 637

two-minute drill, 638

typical port numbers for, 615–616

working with scripts and variables in, 618–619

/.xinitrc file, 667–669

X.org servers, 658–669

configuration files for, 658

configuring, 652

defined, 818

detailed examination of xorg.conf, 660–662

gdm and kdm display managers, 663–665

hardware support for, 654

starting X Window, 659

starting with text or graphical GUI access, 662

starting without window manager, 654–655

startx command for, 666–669

text login mode for, 662–663

troubleshooting scenarios for, 669

using multiple, 659–660

X.org system. See also X.org servers

about, 650

command line tools for configuring, 673

configuring with Red Hat Display Settings tool, 670–673

X Font Server, 674

xterm program, 657