Linux System Administration Training Course

Highlights

• To use a variety of basic Linux commands

• Create, access, and manipulate data under Linux using the standard editors and other important Linux tools

• Program the command interpreter - the Korn shell

• Recognize the interactive features of the Korn shell

• Describe how the Linux file system works

Course Details

Overview

• Aims and Objectives, Schedule, Introductions, Pre-requisites, Responsibilities

Linux Revision

• Objectives, Logging On, Customising the Shell, . - dot Command, Getting Help,

• Command History, Command Completion, Piping - using | symbol, Redirection -

• using > symbol, Redirection - using >> symbol, Redirection of Errors - using 2>

• symbol, Wildcards - File Name Generation, Wildcards - using *, Wildcards -

• using ?, Wildcards - using [ ], Extended Globbing, Vi and Vim Editors, Using vim,

• Command Mode - Moving the Cursor, Setting Options, Input/Replace Mode –

• Inserting/Changing Text, Deleting Text, Other commands, Command-line Mode

• – Saving/Exiting, Mapping Keys, Saving Settings, Cut and Paste Text - delete

• and put, Copying Text - yank and put, Comparing Files - cmp, diff, sdiff, vimdiff,

• Regular Expressions, Global Search Commands, Line Addresses, Global

• Substitution, Replacing Many Characters, Global Printing and Deleting, Why use

• vim?, Advanced Commands, find - Finding Files, More on Redirection,

• Redirecting Errors, Finding Multiple Files, Find and Execute Command, xargs -

• Passing Filenames, Foreground Jobs, Background Jobs - &, kill - Stopping Jobs,

• jobs - Job Control, Scheduling Jobs, crontab Command, mail - Reading Mail,

• grep - Finding Text in Files, grep - Using Regular Expressions, egrep -

• Expression grep, Using Filters, Backing Up Files, Permissions - File and

• Directory, Permissions - Evaluating, chmod - Changing Permissions, chmod –

• Octal Numbers, SUID Bit, umask - Default File Permissions, umask - Changing

• Default Permissions

Installation

• Objectives, Linux Distributions, Red Hat, CentOs and Fedora?, Installation, Pre

• Installation, Installation Summary, Red Hat Enterprise Linux 7, The System

• Administrator, Understanding Superuser Status, su – Switch User, Post

• Installation, File System Type, Customising the Shell, . - dot Command, Backing

• Up Configuration Files, sudo - Commands as Root, sudo – Allowing Use,

• System Directory Structure, System Directory Contents, Webmin, Log Files,

• Logrotate, KickStart - Automated Installation, Creating a Kickstart File, Verifying

• the Kickstart File, Making the Kickstart File Available, Starting the Installation,

• Linux Install Server

Package Management

• Objectives, Managing Packages, Yellowdog Update Manager, Command

• Completion, Appling RHEL Updates, Red Hat Package Manager, Yum with

• RPM, Create a Local Yum Repository, Installing Software From Source, KVM

• Hypervisor

Startup and Shutdown

• Objectives, /boot Directory, GRUB2 - GRand Unified Bootloader, The Grubby

• Tool, Listing the Default Kernel, Changing the Default Boot Entry, Viewing the

• GRUB Menu Entries, Fixing GRUB Issues, init, Upstart, systemd, Systemd

• Targets, Rescue Mode, Emergency Mode, Shutdown Commands

• Service and Printer Management

• Objectives, Overview of Services, systemctl Command, System Monitoring

• Tools, CUPS Printing System, Installation, Managing Printers, lpadmin - Adding

• a Printer, Accept and Reject, Set Default Printer, Printing Files, Enable and

• Disable, lpmove - Moving Files, Deleting a Printer, Web Tool

User Management

• Objectives, /etc/passwd File, Checking the passwd File, Adding a User, Creating

• a User Manually, useradd - Creating a User, Default Values, Customising the

• Environment, /etc/profile, /etc/bashrc Files, /etc/skel Files, /etc/profile.d,

• /etc/shadow File, Password Ageing, /etc/group File, Checking the group File,

• usermod - Modifying a User, Locking Users, userdel - Removing Users,

• groupadd - Creating a Group, groupdel - Removing a Group, groupmod -

• Modifying a Group, newgrp - Using Groups, Change Group - chgrp, Change

• Ownership - chown, Disable Root Login via ssh, Access control lists, Adding

• New Commands

Network Management

• Objectives, Managing Network Connections, Configuration File, /etc/hosts File,

• ping - Contacting a Server, Host Information, File Transfer Between Servers,

• Firewalls, FirewallD, Samba Shares, Samba Testing, Network File System

• (NFS), Server & Client Actions, Server Actions, Client Actions, Client - Configure

• Automount, FTP vsftpd Server, Installing vsftp, Testing vsftpd

File System Management

• Objectives, File Systems, Disc Usage, The Ext3 Filesystem, The Ext4

• Filesystem, The XFS Filesystem, Understanding Inodes, Mounting File Systems,

• Mounted Systems, Disk Slices, umount, mount, Automounter, Preparing Disks,

• Creating Disk Slices, Creating a File System, Mounting the File System,

• Checking File Systems, The /etc/fstab File, Adding Swap Space, Recovery

• Workshop, Disk Quotas, ulimit, Sysctl

File System Backup

• Objectives, Why Do We Backup?, What is a Backup?, Types of Backup, Logging

• Backups, Dump Command (EXT File Systems only), Restore Command (EXT

• File Systems only), Full Restore, Interactive Restore, Xfsdump (XFS File

• Systems only), Xfsrestore (XFS File Systems only), crontab - Scheduled Jobs,

• Controlling Access to cron

Logical Volumes

• Objectives, Logical Volume Manager (LVM), Create Device, Physical Volumes

• (PV), Volume Groups (VG), Logical Volumes (LV), Make File System & Mount,

• Automount, Extend ext4 LV, Reduce ext4 LV, Set Size ext4 LV, Resize xfs LV,

• Remove the PV, LVM Snapshots, Mapped Devices

• Appendices

Maintaining The Kernel

• Objectives, Loading and Removing Kernel Modules, Listing Modules, Install a

• new Module, Remove (or unload) a Module, Updating the Kernel, Using Kernel

• Arguments, The Grubby Tool, Updating All Kernel Menus, Changing a Kernel

• Argument

Managing Security

• Objectives, Introduction to SELinux, Overview, Decision Making Process,

• Configuration Files, Contexts, Troubleshooting, Utilities, Policies and Booleans,

• Modules, Harden and Secure CentOS, Apache HTTP Server, Installing Apache,

• Testing Apache, Summary of Basic Setup, Apache Security, Appendices

Ubuntu

• Objectives, Debian/Ubuntu Comparison, Licensing, Installation, Debian

• Installation Summary, What is apt?, Patches and Security Fixes, Canonical

• Livepatch Service, Configuring ssh, Troubleshooting, Ubuntu Remote Desktop,

• Troubleshooting, Firewall, Configuring UFW, Administration Tools, Server

• Administration Tools, Monitoring and debugging

Shell Scripting

• Objectives, Creating Shell Scripts, Testing the Command, Creating the Script

• File, Testing the Script, Adding Execute Permissions, The PATH Variable, Login

• Files, . - dot Command, Passing Parameters, read Command, read in Scripts,

• Tidying The Output, Choosing the Shell, if Statement, if - File Attributes, if -

• Multiple Tests, elif, if - NOT Condition, if - Multiple Tests, AND and OR, if -

• Testing Numbers, if - Testing Strings, if - Using [[ ]] Square Brackets, case -

• Testing Names, while Loop, for - Iteration, Sequence of Numbers

Handouts

• Main Commands, Get By In vim

Who Should Attend

End Users of Linux who intend to start maintaining a Linux system at command-line level and who need to gain hands-on experience of troubleshooting and system administration of Linux systems.

The course is suitable as preparation for the CompTIA Linux+/LPIC-1, Linux Professional Institute examinations.