Getting Started Using Linux Ubuntu for a Multi-User System

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Getting Started Using Linux Ubuntu for a
Multi-User System
Lab Coordinator Manager Presentation
Prep Webmaster Document Prep Faculty Facilitator
Billy Mattingly David Wilson Bret Charboneau Tim
Haynie Andy Bruinsma Rama Mukkamala

• Team 4

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Overview

• Installing Ubuntu
• Installing Updates
• Downloading MDM
• Using the Terminal
• Configuring MDM

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Installing Ubuntu

• Versions
• 8.04 LTS (Hardy Heron)
• 9.04 (Jaunty Jackalope)
• 10.04 LTS (Lucid Lynx)
• Scheduled release April 29, 2010
• Either 32 or 64 bit
• We are using 8.04 LTS 32 bit

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Installing Ubuntu

• Can be installed in Windows
• Can be installed from a flash drive or CD
• Only 1 monitor can be connected during install

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Installing Ubuntu
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Installing Ubuntu
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Installing Ubuntu
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Installing Ubuntu
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Installing Ubuntu
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Installing Ubuntu
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Installing Ubuntu
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Adding Users
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Adding Users
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Adding Users
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Installing Updates

• Update Ubuntu using Update Manager

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Installing Updates

• Synaptic is used for installing packages

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Installing Updates
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Installing Updates

• Install Nvidia-Settings and Open ssh Server

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Nvidia-Settings
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Nvidia-Settings
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The Terminal
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Common Terminal Commands

• cd change directory
• . (period) refers to the current directory
• .. (double period) refers to the parent
  directory
• ls list directory contents
• man see the manual for a command (q to exit)
• mv and cp move or copy a file
• rm remove (delete) a file
• mkdir and rmdir make and remove a directory
• chown and chmod change file owner and
  permissions (requires ownership or root access)
• sudo run a command as the root user

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Common Terminal Commands

• (pipe) Send the output of one command as the
  input to another command
• gt Send the output of a command to a file
• Run a command in the background
• grep searches for patterns within text
• ps show all running processes
• kill end execution of a running process
• ssh connect and execute commands on a remote
  computer
• less show the contents of a text file, one page
  at a time
• gedit, nano, vim text editors (gedit has a GUI)

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Changing Permissions

• ls l shows files, permissions, and owners
• rwxr-xr-- haynieti somefile.txt
• Think in terms of bits
• First 3 bits represent file owner (1117)
• Second 3 bits represent group (1015)
• Final 3 bits represent everyone else (1004)
• To achieve these permissions, you would type
• chmod 754 somefile.txt

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Installing MDM

• First we need to allow permissions for the
  configuration files
• gt sudo bash
• gt chmod 777 /etc/X11
• gt chmod 777 /etc/X11/xorg.conf

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Installing MDM

• Use the terminal to install repositories
• Repositories contain MDM installation files
• Use the command apt-get

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Installing MDM

• gt gettext xserver-xephyr rccconf
• gt git-clone http//git.c3sl.ufpr.br/pub/scm/multis
  eat/mdm.git
• gt cd mdm/mdm
• gt make
• gt make install
• gt cd ..

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Installing MDM

• gt cd extra-modes/xephyr-gdm
• gt make
• gt make DESTDIR/install
• gt cd ../ ../
• gt cd dependencies
• gt apt-get build-dep libx11-6

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Installing MDM

• When using an Nvidia graphics card, the following
  patches are needed
• discover-devices
• mdm-bin
• mdm-start-seat

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Installing MDM

• The xorg.conf file is for the display settings in
  GDM
• Copy the xorg.conf file into the MDM folder and
  rename it xorg.conf.mdm
• We now have a display configuration file for MDM

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Installing MDM

• In order to change MDM files we need to change
  permissions
• Chmod 777 /../../file name

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xorg.conf.mdm

• xorg.conf.mdm is MDMs main configuration file
• Allows computer to recognize seats

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xorg.conf.mdm
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xorg.conf.mdm
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Other MDM files
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mdm-bin
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Starting MDM

• From the terminal
• /etc/init.d/gdm start
• /etc/init.d/mdm start
• At this point, MDM is started and each screen
  prompts the user to register a keyboard/mouse

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Log Files

• The overall MDM log file

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Log Files

• Each seat also has its own log file

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Questions

• ?