DevOps Classroomnotes 31/Jan/2023

Version Control Systems – Git an Introduction

• Version control system is a software system that allows
  • developers to store the code in common location
  • retains history of every change
  • allows to work for multiple versios/releases/customers
    
• Generally Version Control System will have two software components
  • Client Software (Used by Developers of code)
  • Server Software (Used to host code/Administration)
• Examples:
  • CVS
  • Visual Source Safe
  • Subversion
  • Perforce
  • Mercurial
  • IBM Clear Case
  • Team Foundation version control
  • Git
• Evolution of version control systems
  • Single System
  • Single System => Multi User
  • Client Server
  • Distributed

Git

• Git is a Distributed Version control system
• Terms:
  • Commit: This is a changeset
  • Local Repository: This is the local code
  • Remote Repository: This is the central code
  • Working Directory: This is the folder/directory where we make changes
• Git Workflow for now
  
• Git Cheatsheet Refer Here
• Git can be connected with Server using two major ways
  • username and token/password
  • ssh key
• Create a ssh-key
  • Launch Windows Powershell (Terminal)
  • Execute ssh-keygen
    
• Navigate to settings -> SSH and GPG keys and click on new ssh-key
  
• Copy the contents of ~\.ssh\id_rsa.pub and paste as shown below and add ssh key
  
• Now create a new repository
  
  
• If you dont have a copy of remote repo i.e. local repo we perform an operation which is called as clone.
  
• Copy the url for clone
• Navigate to any folder in your system and execute git clone <url>
  
  
• Now lets make our first change and try executing the workflow