Free Knowledge Resources


Linux Manual Pages


Free Software * Books

Source Code

Free Media

Linux

gdmflexiserver(1)


NAME

   gdm3 - GNOME Display Manager

SYNOPSIS

   gdm3

DESCRIPTION

   gdm3 is the equivalent of xdm(1x) or wdm(1x), but uses the GNOME
   libraries to provide a GNOME look-and-feel. It provides the GNOME
   equivalent of a "login:" prompt.

   gdm3 reads /etc/gdm3/custom.conf for its configuration. For each local
   display, gdm starts an X server and runs a minimal GNOME session
   including a graphical greeter. If configured so, the main gdm process
   also listens for XDMCP requests from remote displays. These requests
   can either be direct, causing gdm3 to start a session on the remote
   display, or indirect, causing a chooser to be opened.

   When managing a display, gdm3 attempts to execute
   /etc/gdm3/Init/display, or /etc/gdm3/Init/Default if that does not
   exist. When a user logs in, gdm3 first attempts
   /etc/gdm3/PreSession/display (or /etc/gdm3/PreSession/Default), and
   then one of the sessions defined in /usr/share/xsessions. When the
   session has completed, gdm attempts to run
   /etc/gdm3/PostSession/display, or /etc/gdm3/PostSession/Default.

   gdm3 maintains information about the displays it is managing in
   /var/lib/gdm3. This includes xauth information, so this directory is
   not readable to normal users.

   gdm3 uses PAM to perform authentication using the config file
   /etc/pam.d/gdm3.

ENVIRONMENT

   XAUTHORITY
       Upon session startup, GDM sets the XAUTHORITY environment variable
       to a session-specific file in /var/run/gdm3.

       Applications and scripts that assume this file is set to
       ~/.Xauthority will not work. To access the display you need both
       DISPLAY and XAUTHORITY variables.

AUTHOR

   Martin Kasper Petersen <mkp@SunSITE.auc.dk>

   This manual page written by Steve Haslam <araqnid@debian.org> for
   Debian GNU/Linux. Updated by Raphaeel Hertzog <hertzog@debian.org>,
   Ryan Murray <rmurray@debian.org>, Josselin Mouette <joss@debian.org>
   and Vincent Lefevre <vincent@vinc17.net>.



Opportunity


Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.



Free Software


Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.



Free Books


The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.



Education


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.


birds banner