CompTIA

Introduction to the Linux Operating System

(HM-ITNW1393.AE1)
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Skills You’ll Get

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1

Gathering Your Tools

  • Setting Up a Learning Space
  • Exploring Linux Distributions
  • Locating a Terminal
  • What Is a Linux Server?
  • Serving the Basics
  • Serving Local Networks
  • Implementing Security
  • Improving Performance
  • Handling Files and Directories
  • Linking Files and Directories
  • Reading Files
  • Finding Information
  • Processing Text Files
  • Redirecting Input and Output
  • Editing Text Files
2

Starting Up and Configuring Your System

  • The Linux Boot Process
  • The Firmware Startup
  • Linux Bootloaders
  • System Recovery
  • Looking at init
  • Managing systemd Systems
  • Managing SysV init Systems
  • Digging Deeper into systemd
  • Configuring Network Features
  • Basic Network Troubleshooting
  • Advanced Network Troubleshooting
  • Focusing on the GUI
  • Serving Up the GUI
  • Using Remote Desktops
  • Forwarding
  • Understanding Localization
  • Setting Your Locale
  • Looking at Time
3

Managing Your System

  • Managing User Accounts
  • Managing Groups
  • Setting Up the Environment
  • Querying Users
  • Managing Disk Space Usage
  • Storage Basics
  • Partitioning Tools
  • Understanding Filesystems
  • Formatting Filesystems
  • Mounting Filesystems
  • Managing Filesystems
  • Storage Alternatives
  • Understanding Backup Types
  • Looking at Compression Methods
  • Comparing Archive and Restore Utilities
  • Securing Offsite/Off-System Backups
  • Checking Backup Integrity
  • Working with Source Code
  • Packaging Applications
  • Exploring Kernel Modules
  • Installing Kernel Modules
  • Removing Kernel Modules
4

Securing Your System

  • Looking at File and Directory Permissions
  • Access Control Lists
  • Context-Based Permissions
  • Understanding Linux User Types
  • Restricting Users
  • Getting to Know PAM
  • Exploring PKI Concepts
  • Using SSH
  • Using VPN as a Client
  • Understanding the Importance of Logging
  • Basic Logging Using rsyslog
  • Journaling with systemd-journald
  • Providing Access Control
  • Looking at Firewall Technologies
  • Forwarding IP Packets
  • Dynamically Setting Rules
  • User Security
  • System Security
  • Network Security
5

Troubleshooting Your System

  • Troubleshooting the Network
  • Troubleshooting Storage Issues
  • Troubleshooting the CPU
  • Troubleshooting Memory
  • Surviving a Lost root Password
  • Looking at Processes
  • Monitoring Processes in Real Time
  • Managing Processes
  • Troubleshooting Access
  • Examining File Obstacles
  • Exploring Environment and Shell Issues
  • Communicating with Linux Devices
  • Working with Devices
  • Using Hot Pluggable Devices
  • Dealing with Storage Problems
  • Uncovering Application Permission Issues
  • Analyzing Application Dependencies
  • Looking at SELinux Context Violations
  • Exploring Firewall Blockages
  • Troubleshooting Additional Hardware Issues
6

Automating Your System

  • The Basics of Shell Scripting
  • Advanced Shell Scripting
  • Writing Script Programs
  • Running Scripts in Background Mode
  • Running Scripts Without a Console
  • Sending Signals
  • Job Control
  • Running Like Clockwork
  • Understanding Version Control
  • Setting Up Your Git Environment
  • Committing with Git
  • Merging Versions
7

Realizing Virtual and Cloud Environments

  • Considering Cloud Services
  • Understanding Virtualization
  • Exploring Containers
  • Exercise
  • Focusing on VM Tools
  • Understanding Bootstrapping
  • Exploring Storage Issues
  • Considering Network Configurations
  • Understanding Orchestration Concepts
  • Provisioning the Data Center
  • Looking at Container Orchestration Engines

1

Gathering Your Tools

  • Installing CentOS
  • Finding Applications that are Providing TCP Network Services
  • Performing Basic File Management
  • Creating a Hard Link
  • Finding Files
  • Using Regular Expressions
  • Using Filters
  • Using Redirection
2

Starting Up and Configuring Your System

  • Booting Linux into Single-User Mode
  • Viewing the Boot Messages from the Kernel
  • Finding the System Initialization Method
  • Managing Services with systemctl
  • Finding the Mail Server for a Specified Domain
  • Finding the Network Information
  • Testing Network Connectivity
  • Viewing the Localization Settings for the Linux System
  • Working with Time Zones
3

Managing Your System

  • Managing Users and Groups
  • Using the Who Command
  • Finding Hard Drives on the System
  • Using tar for Backups
  • Using Red Hat Package Management Tools
  • Managing Kernel Modules from the Command Line
4

Securing Your System

  • Changing Permissions on a File
  • Assigning Additional ACLs to a File
  • Exploring SELinux
  • Exploring PAM
  • Viewing the System Logs
  • Using Firewalld
5

Troubleshooting Your System

  • Viewing Disk Usage
  • Displaying Process Information
  • Displaying Real-Time System Statistics
  • Watching Stopped Processes
  • Reviewing Account Settings
  • Investigating File Obstacles
  • Making an Inventory of System Devices
  • Investigating RPM App Package Issues
  • Identifying System Hardware
6

Automating Your System

  • Making Simple Batch Files
  • Redirecting Output
  • Creating an Advanced Script
  • Running Scripts in Background Mode
  • Managing Processes
  • Using Git
7

Realizing Virtual and Cloud Environments

  • Installing a Virtual Machine
  • Looking at VM Tools
  • Exploring the Contents of the Anaconda file

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Introduction to the Linux Operating System

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