Git and GitHub for DevOps Engineers

Explore how git tracks files from the working area to the staging area and finally to the local repository through git add, git commit, git status, and git log.

Compare code changes across commits using git diff, view commit history with git log and head pointers, and understand added or removed files in each commit within a local repository.

Clone a GitHub repository to your local system with git clone using the repository URL, then learn how local and remote repositories interact and verify with git status.

Create and switch between test and master branches, commit changes on each, and push or merge to synchronize local work with the remote repository.

Learn to create private repositories, switch between public and private, create from the UI or Git CLI, and manage access using SSH keys and credentials; clone, commit, and push securely.

Tag commits to mark working points in git history, then reference and push tags like version 1.0 and 1.1 to easily roll back to a stable state.

Learn to revert changes from the working directory, staging area, or local repository using git restore and git checkout, including handling newly created files and multiple edits.

Discover how to use git rebase to squeeze five commits into a single commit, using interactive rebasing with pick and squeeze, while updating local and remote histories.

Compare git fetch and git pull: pull syncs remote to local and updates the working directory, while fetch only syncs remote to local, requiring merge to update files.

Securely manage a private GitHub project with prod and dev branches and SSH passwordless authentication. Enforce branch protection, approvals, and build checks to keep production code working.

Push dev changes to the UAT environment via a pull request, secure reviewer approvals, and merge before deploying with Jenkins.