Complete Linux Troubleshooting Course (Practical Examples) (updated 8/2022)

The Best Linux Troubleshooting and Administration Course that prepare you to diagnose and resolve Systems issues

What you'll learn

Troubleshoot IT and Linux related issues with effective tools and techniques

Save time when troubleshooting is done with the correct approach

Manage your company's IT environment and respond to critical issues smoothly

Diagnose and Repair Common Networking and Filesystem Errors

Requirements

Some basic knowledge of Linux command line

A PC or MAC

My recommendation is take my Linux course if you have never worked with Linux before. "Complete Linux Training to Get Your Dream IT Job"

Description

Maintain a reliable and highly available Linux server infrastructure, and reduce costly downtime. In this Linux troubleshooting training course, you gain the expertise to effectively diagnose and fix common and complex Linux server configuration and administrations issues, and learn to apply those skills in production environmentAlso helps in RHCSA, RHCE and LFCS certificationsLinux Troubleshooting CourseSection 1 – Introduction and Course Overview• What is this course about• Syllabus Overview• Download SyllabusSection 2 – Troubleshooting Best Practices• Follow Policies and Standards• Documentation or Ticketing Process• Patience To Work With the Users / Group• Get Online Help• Understanding the Issue Before Making a Decision• Involve Vendor If Needed• Log Monitor• Be Honest and Ask QuestionsSection 3 - Lab Setup• What is VirtualBox?• Installing Oracle VirtualBox• Creating First Virtual Machine• Linux InstallationSection 4 - Conceptual Troubleshooting• Who is Who?• Cannot Access Server• Cannot Install Linux• Linux Virtual Machine Running SlowSection 5 - System Access Troubleshooting• Server is Not Reachable• Cannot Connect to a Website or an Application• Cannot SSH as root or a Specific User• Firewall Issue• Terminal Client is not working• Cannot Connect using Putty to a VirutalBox VMSection 6 - FileSystem Troubleshooting• Cannot cd into a Directory• Cannot Open a File or Run a Script• Having Trouble Finding Files and Directories• Cannot Create Links• Cannot Write to a File• Cannot Delete, Copy, Move or Rename a File• Cannot Change File Permissions or View Other Users Files• Disk Space Full or Add More Disk Space• Add Disk and Create Standard Partition• Add Disk and Create Standard Partition• Add Disk and Create LVM Partition• Extend Disk with LVM• How to Delete Old Files• FileSystem is Corruption• Corruption in /etc/fstab• Script to Delete Old Files• HandoutsSection 7 - System Administration Troubleshooting• Running Out of Memory• Add Swap Space• System Rebooted or Process Restarted• Unable to get IP Address• IP Assigned but not Reachable• Having Trouble using vi Editor• Cannot Run Certain Commands• Cannot Change Password• User Account has no Home Directory• How to Change Every Instance of a Word in a File• How to Use sed Command• How to Kill a User Terminal or Process• Recover Root Password• SOS Report• List of Users Logged in by Date• System is Running SlowSection 8 - System Recovery• Recover Virtual System• Recover Physical System• Disaster RecoverySection 9 - Additional Resources • What is FileSystem• File Ownership Commands (chown, chgrp)• Files and Directory Permissions (chmod)• System Logs Monitor (/var/log)• Soft and Hard Links• curl and ping commands• Programs and Service Management• Processes and Jobs (systemctl, ps, kill, top, crontab, at)• New Network Commands• Script to Delete Old Files• Difference Between CentOS/Redhat 5, 6 and 7===================================================================================Here is the testimonial from my students:To all of you that are looking for a REALLY GOOD LINUX course, THIS IS IT, SERIOUSLY I promise you won't find a course on LINUX here that is THIS GOOD. – T.J. Marstiller (Udemy Student)Imran is a very knowledgeable and engaging instructor. As others have said, you can tell that he is not just trying to sell a course, but that he is invested in giving his students a strong career foundation with a positive and approachable attitude. He is also entertaining with his use of pop culture and practical work examples. It really feels like you're in a classroom with him. I'm taking this course mainly as a hobbyist, but got a lot from it already. The homework assignments, quizzes, and handouts help reinforce the material.   – Raymond B.  (Udemy Student)Main thing about course is its simplicity and the hierarchy. Design is very good and easy which helps to understand things better.  – Akash Garg (Udemy Student)I just love the teaching ad the learning experience I am getting  – Jacob Samba (Udemy Student)Imran Afzal might be my favorite teacher I've EVER had. He is funny, and engaging. The course was easy to follow, and with no experience starting I am now extremely comfortable with Linux, and actually really like it. He does make you do your googles, but this is not a bad thing especially considering the nature of IT and documentation to solve your own problems. I highly recommend.  – Vanessa Diaz-Goumond (Udemy Student)The course is run very well and I really like the handouts and the homework that is assigned. The homework helps me learn and continue with the learning process even when adult life is still progressing forward.  – Thomas Rogers (Udemy Student)Such an amazing instructor. Imran must have put in a lot of effort in structuring the course and taking the student step by step, he takes his time in explaining everything, from what Linux is, how to down load it, coding, etc. I have taken other courses from Imran. I am a student for life. Keep it up and please keep preparing more courses for please like us who can benefit from your way of teaching, knowledge and experience. Thank you.  – Ali Shiekh (Udemy Student)In the first place I say a big thank you to the instructor for making such a great course. I was afraid to learn Linux. I now feel very comfortable with Linux. I have understood both the concept behind and the practical as well. I would recommend every one who is NEW to Linux and wants to grab it once and for all without wasting time to go ahead and ENROLL. You will not regret it. I would like the instructor to do same for WINDOWS SERVER ADMIN., I don't seem to find any better and beginner oriented course out there that could be matched with this course. To me, it is the BEST Linux Course on Online. I just started some real world projects with Linux after this great course, I was new to Linux and in just a month I am on the command line always playing.  – Opoku Bright (Udemy Student)I genuinely look forward to additional courses in the future. This has been so informative. You hear the name oracle all the time, but this was well put in layman’s terms  – Atoofa Hasan (Classroom Student)Imran Afzal eats, breathes and sleeps Linux! He really knows his stuff. I feel like he has brought me from a novice level education to masters level in a short time period. Anyone who is looking to get a job in Linux should definitely take this course.  – TJ Walker (Udemy Student)

Overview

Section 1: Introduction and Course Overview

Lecture 1 Introduction

Lecture 2 Syllabus Overview

Lecture 3 Download Syllabus

Lecture 4 Thank You

Section 2: Troubleshooting Best Practices

Lecture 5 Welcome to Troubleshooting Best Practices

Lecture 6 Follow Policies and Standards

Lecture 7 Documentation or Ticketing Process

Lecture 8 Patience To Work With the Users / Group

Lecture 9 Get Online Help

Lecture 10 Understanding the Issue Before Making a Decision

Lecture 11 Involve vendor if needed

Lecture 12 Log Monitor

Lecture 13 Be Honest and Ask Questions

Lecture 14 Slides

Section 3: Lab Setup

Lecture 15 Welcome to Lab Setup

Lecture 16 Lab Design

Lecture 17 What is Virtual Box?

Lecture 18 Installing Oracle VirtualBox

Lecture 19 Create a Virtual Machine

Lecture 20 Download and Install Linux (CentOS7)

Lecture 21 Download and Install Linux (CentOS8)

Lecture 22 Download and Install Linux (CentOS9)

Lecture 23 Install Linux on Cloud

Lecture 24 Slides

Section 4: Conceptual Troubleshooting

Lecture 25 Welcome to Conceptual Troubleshooting

Lecture 26 Who is Who?

Lecture 27 Cannot Access Server

Lecture 28 Cannot Install Linux

Lecture 29 Linux Virtual Machine Running Slow

Lecture 30 Slides

Section 5: System Access Troubleshooting

Lecture 31 Welcome to System Access Troubleshooting

Lecture 32 Server is Not Reachable

Lecture 33 Cannot Connect to a Website or an Application

Lecture 34 Cannot SSH as root or a Specific User

Lecture 35 Firewall Issue

Lecture 36 Terminal Client is not working

Lecture 37 Cannot Connect using Putty to a VirutalBox VM

Lecture 38 Slides

Section 6: FileSystem Troubleshooting

Lecture 39 Welcome to FileSystem Troubleshooting

Lecture 40 Cannot cd into a Directory

Lecture 41 Cannot Open a File or Run a Script

Lecture 42 Having Trouble Finding Files and Directories

Lecture 43 Cannot Create Links

Lecture 44 Cannot Write to a File

Lecture 45 Cannot Delete, Copy, Move or Rename a File

Lecture 46 Cannot Change File Permissions or View Other Users Files

Lecture 47 Disk Space Full or Add More Disk Space

Lecture 48 Add Disk and Create Standard Partition

Lecture 49 Add Disk and Create LVM Partition

Lecture 50 Extend Disk with LVM

Lecture 51 How to Delete Old Files

Lecture 52 Script to Delete Old Files

Lecture 53 FileSystem is Corruption

Lecture 54 Corruption in /etc/fstab

Lecture 55 Handouts

Lecture 56 Slides

Section 7: System Administration Troubleshooting

Lecture 57 Welcome to System Administration Troubleshooting

Lecture 58 Running Out of Memory

Lecture 59 Add Swap Space

Lecture 60 System Rebooted or Process Restarted

Lecture 61 Unable to get IP Address

Lecture 62 IP Assigned but not Reachable

Lecture 63 Having Trouble using vi Editor

Lecture 64 Cannot Run Certain Commands

Lecture 65 Cannot Change Password

Lecture 66 User Account has no Home Directory

Lecture 67 How to Change Every Instance of a Word in a File

Lecture 68 How to Use sed Command

Lecture 69 How to Kill a User Terminal or Process

Lecture 70 Recover Root Password

Lecture 71 SOS Report

Lecture 72 List of Users Logged in by Date

Lecture 73 System is Running Slow

Lecture 74 Rollback Updates and Patching

Lecture 75 Slides

Section 8: System Recovery

Lecture 76 Welcome to System Recovery

Lecture 77 Recover Virtual System

Lecture 78 Recover Physical System

Lecture 79 Disaster Recovery

Lecture 80 Slides

Section 9: Additional Resources

Lecture 81 Welcome to Additional Resources

Lecture 82 Introduction to FileSystem

Lecture 83 File Ownership Commands (chown, chgrp)

Lecture 84 Files and Directory Permissions (chmod)

Lecture 85 System Logs Monitor (/var/log)

Lecture 86 Soft and Hard Links

Lecture 87 curl and ping commands

Lecture 88 Programs and Service Management

Lecture 89 Processes and Jobs (systemctl, ps, kill, top, crontab, at)

Lecture 90 New Network Command

Lecture 91 Redhat Installation - optional

Lecture 92 Difference Between CentOS/Redhat 5, 6 and 7

Lecture 93 Absolute and Relative Paths

Lecture 94 Wildcards

Lecture 95 Combining and Splitting Files

Lecture 96 File maintenance Commands

Lecture 97 Filter-Text Processor Commands

Lecture 98 Environment Variable

Lecture 99 Monitor Users

Lecture 100 sed Command

Lecture 101 System Monitoring Commands

Lecture 102 Advance Package Management

Lecture 103 File Transfer Commands

Lecture 104 Securing Linux Machine - OS Hardening

Lecture 105 File System Check

Lecture 106 System Backup

Lecture 107 NAS Device Setup for Filesystem Sharing

Lecture 108 Congratulations

Section 10: Bonus

Lecture 109 Welcome to Bonus Section

Lecture 110 Bonus Lecture

A beginner in IT field to troubleshoot daily isssues,An experienced system administrator or engineer to improve existing skill