Setting up sudo users in Linux

This video explains about setting up sudo users in Linux.

Course Outline for Ubuntu 12.04

Course methodology

This course helps transition participants from graphical user interface tools to the command-line interface. It provides a solid background in Linux using Ubuntu as the environment for exploration and learning. Lab exercises combined with highly engaging activities will be used to reinforce learning objectives.

Course schedule

Days 1 + 2: General Linux and Ubuntu introduction

Lesson 1: Ubuntu background and Linux (1 hour)

• Describe the history of Linux and the Ubuntu distribution.
• Explain the Ubuntu release cycle.
• Describe the Ubuntu community structure and governance board.

Lesson 2: Ubuntu desktop tour (1 hour)

• Describe the key features of Ubuntu Desktop. 
• Customise the desktop settings. 
• Navigate to directories and files in Nautilus. 
• Install and remove applications.
• Add new language settings.

Lesson 3: Using the command line interface (CLI) and sudo (3 hours)

• Essential CLI commands. 
  • cd, ls, grep, echo, uname, cat, less, more, rm, mkdir, touch, mv, nano. 
  • arguments.
  • man command. 
  • sudo command.

Lesson 4: Networking basics (2 hours)

• Current configuration of network interfaces. 
  • ip, ipconfig, /etc/resolv.conf, route.
• Changing the network configuration. 
• Testing for a working network connection.
  
  • ping, dig, host, nslookup. 
• • Managing the network with Network Manager.
  • adsl, wifi, ethernet. 
• Analyzing the network using Network Tools.

Lesson 5: Filesystem and basic backups (3 hours)

• Storage device naming system. 
• The Filesystem Hierarchy Standard (FHS). 
• Mounting and unmounting devices.
  
  • mount, umount. 
• Configuring fstab.
  
  • /etc/fstab. 
• Symbolic links. 
• Creating an ext4 file system.
  
  • ext2, ext4, xfs, mkfs. 
• Managing file systems.
  
  • fsck, debugfs, dump2fs, e2label.

Lesson 6: Permissions - User management (4 hours)

• Managing user accounts and groups. 
  • adduser, deluser, addgourp, delgroup.
• Different file system permissions. 
• Assigning permissions to different users and groups.
  
  • chmod, chown, chgrp. 
• Creating default settings for new user accounts.
  
  • /etc/adduser.conf. 
• Creating a default environment using /etc/profile.

Lesson 7: Process management (2 hours)

• Displaying and interpreting process statistics.
  
  • top, ps.
• Managing processes.
  
  • kill, nice, renice.
• Scheduling processes (pending upstart plans).
  
  • at, cron. 
• Finding out who's using files or devices.
  
  • lsof

Days 3 - 5

Lesson 8: Ubuntu background, community and support (2 hours)

• The Ubuntu community structure and governance board. 
• Technical board, Linus, Linux, GNU, Debian.
• Support resources from Canonical, partners, and the user community including:
• Mailing lists. 
• IRC channels. 
• Launchpad and other sources for researching and reporting bugs.
• Official Ubuntu documentation and community documentation. 
• Ubuntu release cycle.
• LTS, regular.

Lesson 9: Service management (6 hours)

• Upstart. 
• SystemV compatibility. 
• Starting and stopping system services.
• Kernel management and boot procedures (2 hours) 
• Explain the working and functionality of Grub2.
  
  • update-grub[2]. 
• Customise the Grub2 boot environment.
  
  • /etc/default/grub. 
• Explain the modular kernel.
  
  • modinfo, /etc/modules, /lib/modules, /boot, /etc/initramfs, update- initramfs.
• Manage kernel modules. 
  • modprobe, rmmod, /etc/modprobe.d.
• Describe how udev creates device interfaces for hardware. 
  • udev rules, udevadm, /etc/udev/rules.d.
• Hardware management and monitoring (2 hours) 
• Manage partitions.
  
  • fdisk, cfdisk, system->administration->disk utility, parted. 
• Display hardware information.
  
  • lsusb, lshw, lspci, dmesg, lscpu, lsscsi.
• Monitor a hard drive through the SMART interface. 
  • smartctl.
• Use the memtest facility. 
  • /boot/memtest86+.bin, grub.

Lesson 10 - Package management (3 hours)

• Explain how packages are used in Ubuntu. 
  • packages vs applications, dependencies, conflicts, recommendations.
• Explain apt system, repositories and meta packages. 
  • apt-get, apt-cache, apt-key, repositories, meta packages.
• Manage packages using the appropriate tools. 
  • tasksel, update-manager, Ubuntu Software Centre.

Lesson 11 - Providing services (3 hours)

• Setup a basic LAMP environment. 
  • tasksel install lamp-server. 
  • /var/www/phpinfo.php.
• Setup a basic Samba file server. 
  • apt-get install samba. 
  • /etc/samba.smb.conf.. 
  • smbpasswd.
• Set up SSH for remote access. 
  • apt-get install ssh.

Lesson 12 - Security (2 hours)

• Explain how AppArmor uses default profiles to secure your services. 
  • /etc/apparmor.d.
• Display current profiles used by AppArmor. 
  • aa-status.
• Explain how UFW works to protect your system. 
  • ufw.
• Configure UFW. 
  • ufw enable|disable etc.

Lesson – 13 GNOME configuration (2 hours)

• Localise your GNOME environment. 
  • system -> administration -> language support.
• Manage your GNOME configuration and restore a default state. 
  • gconf-editor, gconftool.
• Customise the GNOME environment. 
  • gdmsetup, /etc/gdm/.
• Connect to a network printer. 
  • system -> administration -> printing.

Lesson 14 - Monitoring / Landscape (1 hour)

• Set up munin for monitoring. 
  • apt-get install munin munin-node, /etc/munin/.
• Set up a landscape account. 
  • apt-get install landscape-client ; dpkg-reconfigure landscape-client.
• Register a computer with landscape.