Linux Administration - Digital Computer Classes

Linux Administration

Linux Administration - An Introduction


Linux Administration involves managing and maintaining Linux-based systems, servers, and networks. It includes tasks such as installation, configuration, troubleshooting, security management, and performance optimization of Linux operating systems.

Course Objectives:

  • Learn essential Linux commands and file system navigation.
  • Understand system architecture and kernel management.
  • Configure network services like DNS, DHCP, and Apache web server.
  • Implement user and group administration, permissions, and access controls.
  • Manage software packages and repositories using package managers.
  • Monitor system performance, troubleshoot issues, and implement backups.
  • Implement security measures such as firewalls, encryption, and intrusion detection.
  • Automate tasks using shell scripting and scheduling utilities.

Pre-requisite / Target Audience:

This course is designed for IT professionals, system administrators, and enthusiasts aiming to become proficient in Linux system administration. Prerequisites include basic knowledge of computer systems, networking concepts, and familiarity with the command line interface. Previous experience with Linux or Unix-like systems is advantageous but not required.

Course Modules

  • What is Linux?
  • Everyday use of Linux
  • Unix vs. Linux
  • Oracle VirtualBox Overview
  • Download and Installation
  • Virtual Machine Creation
  • Linux Distributions
  • Installing Linux
  • Linux Desktop Environment
  • Virtual Machine Management
  • Linux vs. Windows
  • Linux User Base
  • Accessing Linux System
  • Download and Install Putty
  • New Network Commands
  • Connect Linux VM via Putty
  • Important Things to Remember in Linux
  • Introduction to File System
  • File System Structure Description
  • File System Navigation Commands
  • File System Paths
  • Directory Listing Overview
  • Creating Files and Directories
  • Linux File Types
  • Finding Files and Directories (find, locate)
  • Difference between find and locate command
  • Changing Password
  • Wildcard (*, $, ^)
  • Soft and Hard Links (ln)
  • How to open image file through GUI
  • Commands Syntax
  • File Permissions (chmod)
  • File Ownership (chown, chgrp)
  • Getting Help (man, whatis etc.)
  • TAB Completion and Up Arrow Keys
  • Adding Text to File
  • Standard Output to a File (tee command)
  • Pipes ( | )
  • File Maintenance Commands
  • File Display Commands
  • Filters / Text Processing Commands – cut, sort, grep, awk, uniq, wc
  • Compare Files (diff, cmp)
  • Compress and Un-compress Files/Directories – tar, gzip, gunzip
  • Truncate File Size (truncate)
  • Combining and Splitting Files – cat and split
  • Linux vs. Windows Commands
  • Linux File Editors (vi text editor)
  • “sed” Command
  • User Account Management
  • Switch Users and Sudo Access
  • Monitor Users
  • Talking to Users (users, wall, write)
  • Linux Directory Service – Account Authentication
  • System Utility Commands – date, uptime, hostname, which, cal, bc, etc.
  • Processes and Schedules – systemctl, ps, top, kill, crontab, at
  • System Monitoring Commands – top, df, dmesg, iostat 1, netstat, free, etc.
  • OS Maintenance Commands – shutdown, reboot, halt, init, etc.
  • System Logs Monitor (/var/log)
  • Changing System Hostname (hostnamectl)
  • Finding System Information – uname, cat /etc/redhat-release, cat /etc/rel, dmidecode
  • System Architecture (arch)
  • Terminal Control Keys
  • Terminal Commands – clear, exit, script
  • Recovering Root Password (Single User Mode)
  • SOS Report
  • Environment Variables
  • Linux Kernel
  • What is a Shell?
  • Types of Shells
  • Shell Scripting
  • Basic Shell Scripts
  • If-Then Scripts
  • For Loop Scripts
  • Do-While Scripts
  • Case Statement Scripts
  • Aliases
  • Command History
  • Enabling Internet in Linux VM
  • Network Components
  • Network Files and Commands – ping, ifconfig, netstat, tcpdump, networking config files
  • NIC Information (ethtool)
  • NIC or Port Bonding
  • Download Files with URLs (wget)
  • curl and ping Commands
  • File Transfer Commands – ftp, scp, etc.
  • System Updates and Repositories – rpm and yum
  • System Upgrade/Patch Management
  • Create Local Repository from CD/DVD
  • Advanced Package Management
  • Rollback Patches and Updates
  • SSH and Telnet
  • DNS
  • Hostname and IP Lookup (nslookup and dig)
  • NTP
  • chronyd
  • Sendmail
  • Apache Web Server (http)
  • Central Logger (rsyslogd)
  • Securing Linux Machine (OS Hardening)
  • OpenLDAP Installation
  • Tracing Network Traffic (traceroute)
  • System Run Levels
  • Linux Boot Process
  • Message of the Day
  • Customize Message of the Day
  • Storage
  • Disk Partition – df, fdisk, etc.
  • Add Disk and Create Standard Partition
  • Logical Volume Management (LVM)
  • LVM Configuration during Installation
  • Add Disk and Create LVM Partition
  • Extend Disk using LVM
  • Adding Swap Space
  • RAID
  • File System Check (fsck and xfs_repair)
  • System Backup (dd Command)
  • Network File System (NFS)
  • Difference Between CentOS/Redhat 5, 6, and 7
  • Advanced Package Management
  • Filesystem and Disk Management
  • Advanced Shell Scripting
  • User Authentication
  • Security Best Practices
  • Intrusion Detection and Prevention
  • Web and Database Servers Setup
  • Containerization and Orchestration
  • Cloud Computing with Linux
  • Troubleshooting and Debugging
  • Final exam or assessment to evaluate course comprehension
  • Certification of completion for successful participants

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    Linux Administration involves managing and maintaining Linux operating systems, servers, and networks. It's crucial for organizations relying on Linux for its stability, security, and flexibility in various IT environments.
    This course is suitable for IT professionals, system administrators, and anyone responsible for managing Linux-based systems or interested in pursuing a career in Linux administration.
    Participants will learn essential Linux commands, system configuration, network services setup, security management, performance optimization, troubleshooting techniques, and automation through scripting.
    Basic knowledge of computer systems, networking concepts, and familiarity with the command line interface (CLI) are recommended. Previous experience with Linux or Unix-like systems is beneficial but not mandatory.
    A Linux Administration certification validates your skills and knowledge in managing Linux systems, enhancing career prospects in IT infrastructure management, cloud computing, cybersecurity, and more.