Git and GitHub Essentials

Configure git by setting your global user name and email, initialize a local repository, stage edits like an index page in the staging area, and commit changes.

Learn how to track changes with git by adding files to the staging area (index) and committing with meaningful messages, understanding commits, hash, and the first master branch.

Learn to make small, atomic commits with descriptive messages, and use status, add, commit, and log to track changes and undo them effectively.

Learn how to review changes in a file using git diff, compare old and new content, interpret plus and minus lines, and understand diff hunks in version control.

Explore how to convert a local repository into a remote collaboration hub on GitHub by using the staging area, pushing changes, and managing pull requests for review and merge.

Clone a remote repository to your local machine to review and contribute changes, then commit, push, and pull to synchronize with the team's work.

learn how to fetch changes from a remote repository to your local repository using git fetch, review differences, and merge or push updates to origin while avoiding unintended overwrites.

Branching enables parallel work on features by creating separate branches from master, preventing conflicts and enabling later push and merge back to master on the remote origin.

Learn how to merge feature branches into master in Git and GitHub, including checkout, merge, push to remote, and cleaning up old branches.

Learn how git tracks file operations by informing the index about add, move, rename, and delete actions, preserving history with git mv and commits.

Learn to delete files and directories with git rm, using --dry-run, -f, and -r, review staging changes, and commit cautiously.

Master git reset to restore the working tree to the last commit, using hard or mixed (soft) reset to undo changes, and safe git clean to remove untracked files.

Learn how to use a .gitignore file to exclude development or temporary files from Git tracking while keeping production files intact, using patterns, comments, and negation.

Learn to remove ignored files with git clean, using -X to delete only files matched by the ignore file, and understand the difference between capital X and small x.

Explore how Git stash saves unsaved work to a temporary area, letting you switch tasks on the main branch and later restore changes with stash list and stash pop.

Use git log to trace who changed what and when in your code. Clone a repo to practice filtering history with --author and --grep in git log.

Learn to display git commits in an email-like format with git log --format, including from, date, and subject, and explore relative, iso, short, and epoch date options.

Identify the author and the committer and how changes are authored and committed. Learn to customize git log with --format to show author, committer, dates, and messages, including email masking.

Discover how to generate concise change summaries with Git shortlog and blame, identifying who made each change and when. Use these tools to craft release notes and track file-specific edits.

Learn how to track down bugs with git bisect using binary search to identify the commit where an issue first appeared, accelerating debugging.

Apply git and GitHub essentials to locate and fix a broken privacy link using git bisect, with safe, incremental changes and clear commits.

Refresh your understanding of Git branching, merging into master, resolving conflicts with fast-forward, no-fast-forward, and the recursive strategy, and styling branches.

Explore how Git handles conflicts during merges, compare the recursive default with alternative strategies like theirs, ours, patience, and octopus, and learn when to resolve or ignore whitespace.

Discover versioning your product with Git: understand version numbers, the difference between tags and branches, how to tag commits, list or update tags, and push tags to remote repositories.

Learn to import selective changes from one branch to another using git cherry-pick, choose specific commits, resolve conflicts, and preserve history.

Revert commits with git revert to undo changes and rewrite history, illustrated by adding a privacy statement and using branches with cherry-pick into master.

Explore disaster recovery with Git reflog, learn how to alter history, recover deleted work, and review history with Git log when branches like delete me vanish.

Explore recovering a deleted branch with git reflog and understand the difference between git reset and git revert, including history implications and index handling.

Compare git merge and git rebase to understand how each merges or replays changes, alters history, and presents commits on master and feature branches.

learn how to update a remote branch when history has been rewritten, including rebasing, force pushing with care, and avoiding altering remote history to prevent confusion.

Discover how to customize git to save time by configuring credentials with git config, storing name and email in your home configuration, and understanding local, global, and system config priorities.

Learn how to clean up deleted remote branches using fetch prune and git config to prune stale branches automatically, keeping local and remote repositories in sync.

Create a global git ignore file in your home directory, configure git with core.excludesfile, and share ignore patterns across all projects, while still allowing per-repo overrides.

Explore how to tame long git commands using autocorrect and aliases, enabling faster, error-free commits and more efficient workflows across global, local, and system configurations.

Learn how git submodules help manage external packages and libraries within your project, keeping dependencies updated, avoiding oversized repos, and integrating third-party code efficiently.

Learn how to use git submodules to integrate a separate project into a main repository by adding, cloning, and updating submodules, and committing changes to keep them in sync.

Automatically update submodules and all nested dependencies with git commands, using recursive options and foreach to run commands across every submodule in your project.

Learn how hub extends git workflows for GitHub by wrapping git with added features. Install prerequisites (Go, Ruby, RubyGems, Bundler), then clone and manage repositories from the command line.

Discover how pull requests and forking enable open source collaboration on GitHub by proposing changes, reviewing edits, and merging them into the master branch.

Learn how to create a pull request with git and GitHub from the command line, using hub to fork, branch, and submit changes for review in open source projects.

Create a fork of a public repository using the hub command line tool, then clone, create a feature branch, and push changes to propose a pull request for merge.