# Learning guidelines ### Content 1. Operating System families – Unix – from the beginning to current versions 2. Application hosted and where is it used 3. PC architecture – where is the OS place 4. Virtualization concepts 5. Overview for preparing the environment 6. Environment Prepare the environment. 7. Application needed – Virtual Box or AWS account. 8. Centos as basic OS for training Connecting to Linux 9. SSH and Putty 4 Lesson 1: Presentation of environments” 10. Environment in Cloud 11. AWS used as it have free tier option with one year free usage of one VM * How to connect to AWS Cloud * How to create an account * What are basic AWS services – EC2 and VPC * How to use them for quick VM provision * How to connect – Putty and keys DYI: * Create own AWS account * Provision new VM. * Terminate the VM Tools needed: WEB Browser, valid email and valid credit card (no money will be taken from it) ### Putty and puttygen – download. * What is putty why we need it * How to convert a aws pem file to ppk * What are pem and ppk formats for keys. What are ssh keys * Connect to AWS provisioned VM DYI: * Convert own account pem to ppk file * Connect to AWS Hosted VM * Hit command: sudo poweroff Tools needed: browser, internet, aws account, putty and puttygen ### Environment locally – Virtual Box application used as it is free of usage and no license usage costs: * What is Virtual Box and what other application for virtualization on desktops * How to create a VM and what are the components of a VM locally hosted DYI: * Download and Install Virtual Box * Download Centos minimal * Create a VM Tools needed – browser, PC or laptop, some space on disk, some RAM and internet connectivity 2.3 Lesson 4: Install Centos on local environment: 1. Environment locally – Install Centos * Download and install Centos on Virtual Box * What steps are needed during installation DYI: * Download and Install Centos on Virtual Box * Connect to VM Tools needed – browser, PC or laptop, some space on disk, some RAM and internet connectivity ### Basic Linux Files. Folders/directories. Symlinks Tools – touch, cd, mkdir/rmdir, cp, mv, ll, ls, more, less, rm, grep, cat, df/du, tail Presentation of Linux filesystem: * What is a file * What is a folder * What is linux filesystem format (not to be confused with disks/filesystems) * Directories: Managing directories * Create/remove a directory – mkdir/rmdir * List a directory – ls, ll - Managing files * Create/remove a files – touch * View file content – cat, less, more, grep, tail, head * Copy files – cp, scp, mv - Working with symlinks * What is a symlink * Why to use it and where * How to create a symlink * Create a folder * Create a file and move it between folders * Create symlink to a folder and copy data to symlink * Delete folders and files ### Basic Linux Users and Groups Useradd, passwd, /etc/passwd, /etc/shadow * Working with Users, Groups, and Directories * Creating and Deleting User Accounts * Change password with passwd * Specific commands and data that can be added with useradd * “root” user - important files for users * /etc/passwd * /etc/shadow - Understanding sudo * What it is being used * visudo * sudoers and how to allow user to do root commands DYI: * Add user with useradd and adduser (to be installed from repo) * Delete user with userdel. Where and what should be removed ### Basic Linux Files. Folders/directories #### Symlinks Permisions and owenship: Chmod and chown - User and Group Permissions * Overview of the file and folder permissions - Read, Write & Execute Permissions * chmod command * ls, ln - Viewing File Permissions * chown command - Changing permissions DYI: * Work with permission and ownership * Changing permission and ownership #### Locating needed info find, locate * find * locate #### Working with archive – tar, gzip, unzip - archiving and de archiving * archiving with tar command * archiving with zip command * untar and unzip - work with archived files * why do we need archived files * zcat and zgrep * Basic Linux Package installation – repositories vs yum vs sources vs rpms * What is a software on Linux * User and Group Permissions - Overview of the file and folder permissions * Read, Write & Execute Permissions * chmod command - Viewing File Permissions * ls, ln: Changing permissions * chown command 10 Basic Linux Package installation * working with directories – finding free space, find partitions space, ### Basic Linux Processes * ps, kill 2 13 Basic Linux Networking – basic concepts * OSI, TCP/IP, IP addressing, IP and subnet mask, Ports (UDP/TCP), applications ### Basic Linux Networking * check interfaces - route, ifconfig, ifup, ifdown, arp * Configure interface * troubleshooting * tcpdump, netstat, ping, mtr, telnet ### Advance Linux Networking * tunnels (SSH, GRE), iptables, mangle, routing tables, iproute, bind, ### Advance Linux Operating System * Daemon Management * runlevels, chkconfig, init.d * Scripting * bash * provision (vagrant and Ansible) ### Advance Linux Package installation * Install basic LAMP server and have a web page working * Install files from source ### Advance Linux File Systems * types, fstab, mounts * check, volumes, LVMs, Storage ### Advance Linux RAM * free, htop and top, balloon ### Advance Linux Processes * lsof --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. 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