Description



As part of this course, you will learn most of the important Linux commands that can come in handy while working in Linux-based environments.



Here are the high-level details of the Linux Commands that are covered as part of this hands-on course.



   You will get started by having an appropriate environment to practice. Windows users can set up Ubuntu 20.04 using wsl.

   Once the environment is ready, you will understand how to get started with basic Linux Commands.

   The most commonly used command in Linux is ls. It is used to list the files. We will see different variations of ls by going through all the relevant arguments.

   One of the powerful Linux commands and also my favorite is “find“. It helps us to filter the files and directories based on name, type, modified time, etc. You will learn how to use the find command effectively from the perspective of finding the files based on the criteria.

   As we understand how to get details related to files and folders in Linux, we will go through the details related to previewing the data in files using important Linux commands such as cat, tail, more, etc. Also, we will review Linux commands such as cut, sort, uniq to process the data. All these commands are typically used against text files.

   After going through details related to ls, find commands as well as commands related to processing data in files, we will walk you through the details related to file and folder properties in Linux. You will get an overview of commands such as useradd, userdel, chmod, etc which are typically associated with file permissions.

   One of the key aspects related to files and folders is to manage them effectively. We will go through the details about managing files and folders using Linux commands such as cp for copy, mv for move or rename, rm for delete or remove, tar to build uncompressed as well as compressed tar balls. Also, you will get a taste of the awk command to automate some of the common tasks such as reorganizing the files based on patterns.

   The core components of a computer are nothing but CPU, Memory, and Storage. In this section or module, you will be learning Linux commands such as lscpu to get CPU details, free to get memory details, and then df and du to get storage details.

   At times, we need to make sure the data is in files as well as codebase to troubleshoot the production issues or bugs in QA. In this section, you will learn how to use the Linux command called diff to compare files and folders and review the differences.

   Environment Variables are the ones that can impact the sessions logged in by users in Linux. As part of this section, you will be learning details related to Variables, Environment Variables. Also, you will understand how to list all the Environment Variables using Linux commands such env, and how to get a value of a Variable or Environment Variable using the Linux command echo. On top of these things, you will also learn all important aspects related to one of the most important Environment Variables called PATH.

   As we gain a decent amount of knowledge related to Linux commands using a single server, it is time for us to explore other important commands such as ssh, scp, pssh, pscp, etc which require more than one Linux System or Server. Also, we need to go through basic networking concepts. To learn commands to interact between the servers as well as to understand basic networking concepts, we will get started with AWS to provision Ubuntu-based virtual machines. These Virtual Machines will be used in the subsequent sections to learn the concepts mentioned earlier as part of this bullet point.

   Once we go through the details about getting started with AWS, we will focus on learning all key concepts related to SSH such as sshd daemon, updating ssh config files, and restarting sshd using systemctl or service command. Also, we will go through the details related to passwordless login and also ability to run commands remotely via ssh. We will also understand how to set up parallel ssh and then run commands on multiple Linux systems in parallel.

   To be comfortable with learning in a Linux environment, it is very important for one to understand key concepts such as different types of IP Addresses, Port Numbers, relationships between applications and databases with ports, etc. In this section, we will go through all important networking concepts using apache2, MongoDB, etc.

   Once we are comfortable with SSH, it is time for us to use tools such as scp which uses ssh under the hood to copy files and folders between the Linux Systems. We will also explore parallel scp to copy files in parallel to multiple target systems from one source system. Also, we will go through the details related to speeding up the copy using different techniques which include submitting multiple scp commands using nohup.

   One of the important aspects for any IT Engineer is to troubleshoot the application issues deployed in Linux by reviewing logs generated by applications. After going through scp, you will learn how to troubleshoot issues by using grep and find against log files of the applications deployed on the Linux Server.

   To ensure that we can monitor and manage Linux Servers, we not only need to understand how to manage applications and databases in Linux but also need to understand the performance of the applications. For managing applications and databases on a Linux server, one should be familiar with commands such as apt to install applications and systemctl or service to manage the life cycle of applications and databases. To monitor, one should be familiar with commands such as ps, lsof, top, etc. You will learn how to monitor and manage applications as well as databases using examples such as ssh, apache2, mongodb, jupyterlab, etc.

   As we learned quite a few commands and tools on Linux, now it is time for us to work on increasing productivity by using appropriate tools, especially for Windows users. You will see the relevance and also how to setup tools such as notepad++, winscp, visual studio code with remote development extension, git tools for Windows, etc.

   Organizations will end up having hundreds of servers to support their applications. However, these hundreds of servers need to follow a handful of templates. Using Server Automation tools like Ansible, we should be able to automate the process of configuring a large number of servers using a handful of templates. You will get an overview of Ansible covering some of the core concepts of Ansible such as running commands, inventory, playbooks, variables, roles, etc.

   Also, you will understand how to use programming languages like Python to take care of automation by using modules such as os, glob, subprocess, etc.



Basic Linux Commands



   Running the first command on Linux

   Getting usage of Linux commands using the help

   Overview of Files and Folders

   Fully Qualified or Absolute Paths and Relative Paths of Files and Folders



Listing files and folders in Linux File System using ls



   Overview of ls command to list files and folders in Linux

   Setup Files and Folders from GitHub Account to learn Shell Commands

   Setup Jupyter Lab to go through help on linux commands

   Getting the properties of files and folders using the ls command in Linux

   Sorting ls output while listing files in Linux

   List files and folders in Linux sorted by time

   List files and folders in Linux sorted by size

   Overview of Hidden Folders and Files

   Listing Hidden Files and Folders in Linux

   Listing the files and folders recursively in Linux

   Exploring Control Arguments while listing files in Linux

   Overview of representation of file sizes

   Overview of alias command and ll to list files and folders



Filtering files and folders in Linux File System



   Introduction to the filtering files and folders on Linux File System

   Accessing Windows Files and Folders from Linux setup using wsl

   Overview of grep command

   Few basic examples using grep and piping

   Overview of Piping while running shell commands

   Overview of Basic Pattern Matching

   Deep Dive into the wc command to get word count or line count

   Overview of the find command to filter files and folders

   Understand the behavior of the simplest form of find command in Linux

   Using Linux find command to find directories or folders

   Using Linux find command to find files by type and pattern

   Overview of Standard Directories in Linux

   Get the list of files based on the modified time using the Linux find command

   Get the list of files based on size using the Linux find command



Processing Data in Files using Linux Commands



   Introduction to commands used for processing data in files using Linux

   Overview of Different File Formats

   Get file format or type using file command in Linux

   Preview the data in the text file using head command in Linux

   Preview the data in the text file using tail command

   Install apache web server on Ubuntu Linux

   Generate Apache Logs every second using shell script and nohup

   Monitoring Logs using tail command in Linux

   Preview the data in the text file using more command

   Extract data from files in Linux using cut command

   Sort data in files in Linux using sort command

   Sort data in files in Linux using sort command based on key and delimiter

   Extract Information and Redirect to a file in Linux

   Getting Unique Records from File using sort in Linux

   Using uniq to get unique values in Linux



Understanding File and Folder Properties



   Introduction to Properties of Files and Folders

   Understand File and Folder Properties provided by ls command

   Understanding Owner of the Files in Linux

   Overview of groups associated with files and folders in Linux

   Creating Groups in Linux using groupadd

   Create users in Linux using useradd command

   Specifying bash as the default shell while creating users in Linux

   Create Users with Group in Linux

   Add users to supplementary or secondary groups in Linux

   Overview of File Permissions in Linux

   Overview of umask for default permissions on Files and Folders

   Permissions on Home Folders for different Linux Users

   File and Folder Permissions for Groups and Others

   Conclusion for File and Folder Properties using Linux



Managing Files and Folders in Linux



   Introduction to Managing Files and Folders in Linux

   Generate empty files in Linux using touch command

   Creating Directories in Linux using mkdir command

   Overview of awk command in Linux

   Overview of cp command to copy files in Linux

   Using cp command to copy files in Linux

   Create multiple folders at once using awk in Linux

   Copy files using Patterns in Linux

   Automate file copy using awk and cp in linux

   Copying folders recursively using cp command in Linux

   Copying files using cp while preserving properties in Linux

   Moving Files in linux using mv command

   Automate file move using awk and mv in linux

   Overview of tar command to take the backups

   Create backup of files and folders using tar command in linux

   Restoring Files and Folders using tar command in Linux

   Moving Folders in Linux using mv command

   Overview of rm command to remove files from Linux File System

   Delete files from Linux File System using rm command

   Use alias to delete files interactively from Linux File System

   Delete folders from Linux File System using rm command

   Restore Data Folder from the tar ball

   Delete files using find and rm from Linux file system based on name

   Delete files using find and awk from Linux file system based on name

   Generate log files for multiple years using touch with patterns

   Update timestamp of files based on names in Linux using touch

   Delete files using find and rm based on modified time in Linux

   Renaming the files and folders in Linux



Basic System Commands in Linux



   Introduction to Basic System Commands in Linux

   Overview of core components of a computer

   Get CPU Details using lscpu command in Linux

   Get Memory Details using free on Linux

   Get Storage Details using df in Linux

   Get Disk Usage Details using du in Linux

   Get largest folders and files using du and sort on Linux

   Understand Storage Details of Directories using du on Windows

   Get storage use of folders and files

   Get Storage Details of larger files using find and du



Comparing Files and Folders in Linux using diff



   Introduction to comparing files and folders in Linux using diff

   Overview of the diff command

   Prepare Dataset to explore diff command in Linux

   Understand the output of the diff command in Linux

   Compare Files Ignoring Blank Lines and White Spaces using diff in Linux

   Compare Files Ignoring case using diff in Linux

   Unified and Side By Side Comparison using diff in Linux

   Compare Folders in Linux using the diff command



Variables and Environment Variables in Linux



   Creating and Printing Variables using echo in Linux

   Overview of Environment Variables in Linux and env command

   Overview of Environment Variables in Windows

   Review some of the standard environment variables in Linux

   Get the location of commands in linux using which

   Review PATH and unset PATH in Linux

   Relevance of PATH Environment Variable while running Linux Commands

   Overview of Profile and rc in Linux

   Create a simple shell script and grant execute permissions in Linux

   Update PATH with parent folders of custom applications

   Update PATH in profile with parent folders of custom applications



Getting Started with AWS



   Introduction to Getting Started with AWS

   Signing up for AWS

   Overview of AWS Web Console

   Overview of AWS EC2 Console or Dashboard

   Create AWS EC2 Key Pair using AWS EC2 Console

   Create our first AWS EC2 Instance using Ubuntu 20

   Login into AWS EC2 Instance using Key Pair

   Overview of AWS Free Tier and Pricing

   Overview of AWS Web Console Cloud Shell

   Overview of AWS EC2 Instance Concepts

   Managing AWS EC2 Instances



Overview of SSH to interact with remote servers



   Introduction to Overview of SSH to interact with Remote Servers

   Create Multiple AWS EC2 Instances

   Different Modes of SSH Login to Remote Servers

   Understanding Password less login to Remote Server

   Overview of SSH Daemons on Remote Servers

   Understand SSH Properties Files and Properties

   Enabling Password login on Remote Server

   Run Commands on Remote Servers using SSH

   Connect to Remote Servers from Windows using Powershell as well as wsl

   Setup pssh or parallel-ssh on Mac as well as Ubuntu Linux

   Run Commands on multiple servers using parallel-ssh or pssh

   Run Commands on multiple servers using pssh using the hosts file

   Enable Password less login using ssh keys and the ssh-copy-id command

   Terminate AWS EC2 Instances used for demo



Basic Networking Concepts using Linux



   Introduction to Basic Networking Concepts using Linux

   Provision EC2 Instance from AWS

   Overview of AWS Security Groups

   Overview of Different Types of IP Addresses

   Install Apache Webserver on Ubuntu

   Update Security Group to access Apache Web Application

   Overview of Daemon or Background Processes and Ports

   Understanding Structure of IP Address

   Overview of DNS Aliases for IP Addresses

   Install Jupyter Lab on Ubuntu

   Run Jupyter Lab using Localhost

   Update Security Group to access Jupyter Lab

   Setup Mongo DB on AWS EC2 Instance

   Run MongoDB on Universal IP Address

   Update Security Group to access Mongo DB

   Cleanup AWS EC2 Instance used to demo networking concepts



Copy Files and Folders between Multiple Systems using scp



   Introduction to Copying Files and Folders between multiple Linux Systems using scp

   Provision of multiple EC2 Instances from AWS

   Connect to EC2 Instances using Windows Powershell

   Connect to EC2 Instances from Linux on Windows

   Prepare Data Sets to explore Copying Files

   Overview of scp for secure copy between Multiple Systems

   Copy Files using scp between Multiple Systems

   Copy Folders using scp between Multiple Systems

   Copy Tar Ball or Zip File using scp between Linux Servers

   Setup parallel-scp or pscp to copy files to multiple systems

   Prepare Target Systems by recreating folders using pssh

   Copy Files onto remote machines in parallel using pscp

   Copy Folders onto remote machines in parallel using pscp

   Overview of Copying Files and Folders between two systems in parallel

   Submit Long-Running Applications or Commands in the Background using nohup

   Run multiple scp commands in parallel using nohup in Linux

   Stop or Terminate AWS EC2 Instances used for the tasks



Troubleshooting Application issues using find and grep in Linux



   Introduction to Troubleshooting Applicatin Issues using find and grep in Linux

   Review Standard Location for Application Logs on Linux

   Setup Log Files to explore grep and find to troubleshoot the issues

   Overview of Standard Log Message Format

   Quick Review of find command to get log file names based on criteria

   Getting help or official documentation or man page on Linux grep command

   Overview of Standard Input, output and error

   Redirect Linux Command or Program Results to a file

   Overview of Null Device in Linux

   Redirect stanard output and error to files and null device in Linux

   Overview of Case Sensitivity in Linux

   Search for error lines from files in Linux using find and grep

   Get File Names with errors using grep and find in Linux

   Perform Whole Word Search using Grep Command

   Search for multiple patterns in the files using find and grep in Linux

   Get number of lines with pattern using find and grep in linux

   Get line number and output line using grep in Linux

   Get additional lines along with error or exception lines using grep in Linux



Monitoring and Managing Linux Servers using System Commands



   Introduction to Monitoring and Managing Linux Servers using System Commands

   Setup EC2 Instance on AWS using Ubuntu 2

   Overview of Managing Softwares on Ubuntu using apt

   Install Apache Web Server and Mongodb on Ubuntu

   Manage Applications and Databases using systemctl or service command

   Start Apache Web Server and Mongodb using systemctl

   Overview of Service and its components

   Recap of commands to get Linux Server Details

   Get CPU or Load Average of Linux Server using uptime command

   Overview of ps command to get details about processes on Linux Server

   Get details of all the processes running on Linux Server using ps

   Get list of processes owned by user on Linux Server using ps

   Customize the output of ps command for specific details of processes

   Number of processes on Linux Server owned by each user using ps

   Get Process Details for a service on Linux Server using ps command

   Overview of lsof command to get list of open files on Linux

   Get open file details using lsof for a given process id

   Get open file details using lsof for a given port number

   Get Process Details using lsof command for a given file

   Troubleshoot Port Usage on Linux using lsof command

   Overview of top command in Linux to get system performance details

   Getting help or man page of top command in Linux

   Using Command Line Options of top command in LInux

   Customize top interactive interface in Linux

   Switching between groups in top interactive interface in Linux

   Kill Processes using top interactive interface in Linux

   Terminate AWS EC2 Instance setup to practice Linux system management commands



Overview of Developer Tools for Linux using Windows



   Introduction to Developer Tools for Linux on Windows

   Install Notepad++ on Windows

   Install WinScp on Windows to access files on remote Linux Servers or Sites

   Add Site to WinScp for Password Login into Remote Linux Server

   Add Site to WinScp for Passwordless Login into Remote Linux Server

   Copying Files between Windows and Remote Linux Systems using WinScp

   Opening Files on Remote Machines using WinScp and Notepad++ Locally on Windows

   Overview of Advanced Editing Capabilities of Notepad++

   Overview of Visual Studio Code on Windows for Remote Development

   Install Visual Studio Code on Windows

   Install Remote Development Extension Kit for Visual Studio Code

   Setup Project on remote machine for remote development using Visual Studio Code

   Open Remote Project via SSH using Visual Studio Code

   Open Project via WSL using Visual Studio Code

   Access Configuration Files on Remote Machines using Visual Studio Code

   Install Git and Git Bash on Windows

   Install Beyond Compare on Windows

   Setup Repository using Git to explore Beyond Compare

   Quick Demo of Beyond Compare to compare code base



Overview of Ansible for Server Automation



   Introduction to Overview of Ansible for Server Automation

   Setup Ansible on Ubuntu 20

   Provision EC2 Instances to learn Ansible

   Run first command using Ansible on Multiple Instances using inline inventory

   Run first command using Ansible on Multiple Instances using inventory file

   Update Ansible Hosts Files on AWS EC2 Reboots

   Overview of Ansible help, man page and official documentation

   Add User and Group Manually in Linux

   Add Group on remote instances using ansible

   Adding User using Ansible user module on remote servers

   Add Folder on remote systems using Ansible file module

   Copy authorized keys using Ansible copy module

   Setup Project Structure for Ansible Playbooks using Visual Studio Code

   Create and Run first ansible playbook

   Define Variables for Credentials to run Ansible Playbooks

   Develop Ansible Playbook to Mange Users

   Getting Started with Developing Ansible Roles

   Develop and Validate Ansible Playbook with Role

   Adding more tasks to the Ansible Role and Troubleshooting the issues

   Create Ansible Playbook with Variables

   Using Lists and Loops in Ansible Playbooks

   Using Tags to run specific tasks from Playbooks

   Update Ansible Role and Playbook with variables and tags

   Add Variables under vars folder of Ansible Role

   Terminate AWS EC2 Instances used for Ansible Tasks for Server Automation

   Conclusion of Overview of Server Automation using Ansible



Overview of Automation using Python on Linux



   Introduction to Overview of Automation using Python on Linux

   Validate Python and Python Modules such as pip on Ubuntu

   Setup and Validate Jupyter Lab on Ubuntu

   Create Folder for Notebooks using Jupyter Lab

   Overview of getpass module to get username

   Running Linux Shell Commands from Jupyter Notebooks

   Overview of Python os module

   Setup Data Sets for Python and Linux Integration

   Overview of Python glob module

   Overview of running Linux Commands using subprocess

   Sort all files in Linux File System by size using Python

   Uncompress all Compressed Files using Python on Linux

   Overview of Python Multiprocessing Module

   Uncompress Files in Parallel using Python multiprocessing

   Add Extension to Files using Python

   Overview of Copying Files using Python and scp

   Run Commands on Remote Machines using Python and ssh

   Copy Files to multiple systems in parallel using Python and scp



Desired Audience



Here is the desired audience for this advanced course.



   Experienced application developers to gain expertise related to Linux shell commands

   Experienced Data Engineers to gain enough skills related to Linux shell commands

   Testers to improve their testing capabilities by using Linux shell commands effectively



Prerequisites



   Logistics

       Computer with decent configuration (At least 4 GB RAM, however 8 GB is highly desired)

       Dual Core is required and Quad-Core is highly desired

       Chrome Browser

       High-Speed Internet



Who this course is for:



   Students who want to learn Linux commands by hands-on practice

   Freshers and entry level IT professionals who want to gain the knowledge of Linux commands

   Any Software developers such as Python, Java, etc who would like to gain proficiency of Linux Commands

   Any Software Testers who would like to gain proficiency related to Linux Commands

   This course is designed for all those IT Professionals who frequently work on Linux based Environment

   System Administrators, Network Administrators, DevOps Engineers, etc



Requirements



   PC or Mac with decent configuration

   At least 8 GB RAM, i5 or equivalent processor

   CPU with dual core or with higher configuration



Last Updated 6/2022