DevOps Classroom Series – 03/Feb/2021

How is Source Code Managed?

• Multiple developers work on the same source code for the project
• To make this possibility a reality, we can use
  • Shared Folder:
    • This is a simple approach
    • Problems:
      • Two People cannot work on same file at same time
• To make source code management effective, users should be able to
  • go back in history to find out changes
  • We need versions/Revisions for every change by developer
  • History of all the changes
• Version Control System also known as Source Control is a software that
  • Manages changes to software code by maintaining versions for every change
  • Allows multiple users to use the Source Code parallely and submit their changes
  • Backup and Restoration options in the case of server failures.
• Generations of Version Control Systems
  • First:
    • Networking: None
    • Operations: One file at a time
    • Concurrency: Locks
    • Examples: SCCS, RCS
  • Second: Centralized Version Control Systems
    • Networking: Centralized
    • Operations: Multi-files
    • Concurrency: Merge befor Commit
    • Examples: CVS, Source Safe, Subversion, Clear Cases, Team Foundation Server
  • Third: Distributed Version Control Systems
    • Networking: Distributed
    • Operations: Changesets
    • Concurrency: Commit before merge
    • Examples: Git, Mercurial

GIT

• Linus Torvalds creator of Linux developed own tool based on the lessons learned from past experience and had some design goals to build a distributed version control system
  • Speed
  • Simple
  • Fully distributed
  • Ability to handle large projects like linux kernel effeciently
  • Support for non-linear development
• Installing Git
  • Windows
    • Install Chocolatey Refer Here
  • Linux:
    • Ubuntu: sudo apt update && sudo apt install git -y
    • RHEL: sudo yum install git -y
  • MAC:
    • When you install xcode we get git Refer Here
    • Install homebrew Refer Here

    brew install git