1 on 1 web hosting - Objective 2: Set Up xdm The X Display
Objective 2: Set Up xdm The X Display Manager, or xdm, is a tool to manage X sessions on physical displays both locally and across the network. Part of its job is to handle user authentication through a graphical login screen, which replaces the familiar text- mode login. Configuring xdm xdm is distributed as part of XFree86 and is configured by a series of files located in /etc/X11/xdm. These files include: Xaccess This file controls inbound requests from remote hosts. Xresources This file is similar to .Xresources, discussed earlier. It holds configuration information for some xdm resources, including the graphical login screen. This file can be edited to modify the appearance of the xdm login screen. Xservers This file associates the X display names (:0, :1, …) with either the local X server software or a foreign display such as an X terminal. Xsession This file contains the script xdm launches after a successful login. It usually looks for .xsession in the user s home directory and executes the commands found there. If such a file doesn t exist, Xsession starts a default window manager (or environment) and applications. Xsetup_0 This file is a script started before the graphical login screen. It often includes commands to set colors, display graphics, or run other programs. This script is executed as root. xdm-config This file associates xdm configuration resources with the other files in this list. It usually isn t necessary to make changes in this file unless an expert administrator plans to customize xdm configuration. Running xdm manually xdm uses the X server to run on your local display. Therefore, you must have a working X configuration prior to using a display manager. Then, to start xdm, simply enter it as root: # xdm xdm launches the X server and display the graphical login, and you can log in as usual. xdm then starts your graphical environment. After you log out, xdm resets and again displays the login screen. Most Linux distributions enable virtual consoles. You can switch among them using the key combinations Ctrl Alt F1, Ctrl Alt F2, and so on. Typically, the first 380 X (Topic 2.10)
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