106 User Interfaces and Desktops KT Flashcards
(28 cards)
106.1 Install and configure X11
The following is a partial list of the used files, terms and utilities:
/etc/X11/xorg.conf /etc/X11/xorg.conf.d/ ~/.xsession-errors xhost xauth DISPLAY X
/etc/X11/xorg.conf
Xorg uses a configuration file called xorg.conf and files ending in the suffix .conf from the directory xorg.conf.d for its initial setup.
/etc/X11/xorg.conf.d/
The /etc/X11/xorg.conf.d/ directory stores user-specific configuration.
~/.xsession-errors
xsession-errors file is where the X Window system logs all errors that occur within the Linux graphical environment.
xhost
Command: The xhost program is used to add and delete host names or user names to the list allowed to make connections to the X server.
xhost [[+-]name …]
xauth
Command: The xauth program is used to edit and display the authorization information used in connecting to the X server.
xauth [ -f authfile ] [ -vqibn ] [ command arg … ]
DISPLAY
Environment: DISPLAY to get the default host and display to use.
X
The X Window System is a network transparent window system which runs on a wide range of computing and graphics machines.
106.2 Graphical Desktops
The following is a partial list of the used files, terms and utilities:
KDE Gnome Xfce X11 XDMCP VNC Spice RDP
KDE
KDE stands for K Desktop Environment. It is a desktop environment for Linux based operation system.
Gnome
Gnome is a desktop environment for Linux based operation system. GNOME was originally an acronym for GNU Network Object Model Environment.
Xfce
Xfce is a lightweight desktop environment for UNIX-like operating systems.
X11
X11 is a network protocol designed for Unix and similar operating systems to enable remote graphical access to applications.
XDMCP
XDMCP is a remote desktop protocol. This protocol is insecure and uses a large amount of bandwidth due to lack of compression.
VNC
VNC is a graphical desktop sharing system that allows you to remotely control the desktop interface of one computer (running VNC Server) from another computer.
Spice
The SPICE project aims to provide a complete open source solution for remote access to virtual machines in a seamless way.
RDP
Remote Desktop Protocol (RDP) is a proprietary protocol developed by Microsoft which provides a user with a graphical interface to connect to another computer over a network connection.
106.3 Accessibility
The following is a partial list of the used files, terms and utilities:
High Contrast/Large Print Desktop Themes. Screen Reader. Braille Display. Screen Magnifier. On-Screen Keyboard. Sticky/Repeat keys. Slow/Bounce/Toggle keys. Mouse keys. Gestures. Voice recognition.
High Contrast/Large Print Desktop Themes.
Most desktops provide different themes that allow for easier viewing. A High Contrast theme provides solid colors (typically black and white) to make the display more distinctive.
Screen Reader.
A screen reader transmits whatever text is displayed on the computer screen into audio for a visually impaired user.
Braille Display.
A refreshable braille display or braille terminal is an electro-mechanical device for displaying braille characters.
Screen Magnifier.
Software that magnifies the screen, magnification usually occurs where ever the mouse is.
On-Screen Keyboard.
Keyboard that displays on the screen and can be used with the mouse.
Sticky/Repeat keys.
Sticky Keys is an accessibility feature of some graphical user interfaces to assist users who have physical disabilities or help users reduce repetitive strain injury .
