Class 3 - Revisions and the Cloud
What is Git?
- Version control system that lets multiple users work on the same code
- Keeps track of changes and keeps all of your projects in one repository
What is GitHub?
- An online place to store code to share with others
- If Git is the sport, GitHub is the arena
- Manages work with version control, reviewing changes, and keeps changes separate until you want to add them
Commands for Cloning and Verifying Status
git clone [URL] - takes the URL from GitHub and clones it to the local computergit remote -v - displays the URL of the GitHub repositorygit status - displays if there have been any changescode . - opens the current folder in the editorgit pull origin main - pulls updated repository from GitHub
git config pull.rebase false - merges local/GitHub in case of error between local and GitHub files (may need to add a comment in the Merge file)
Commands for ACP (Add, Commit, Push) Process
git add [file names] - adds files to stage for the snapshot
git add . - adds everything to stage for the snapshot
git commit -m "[message text]" - add message and commits for the snapshotgit push origin main - pushes any new commits to GitHub
Terms
- repository - a collection of files that will be used by Git. Repositories can be stored live on GitHub or on a local computer.
- States
- Modified - file has been changed but not staged or committed
- Staged - files have been added to the Index and ready to be committed
- Committed - data is securely stored in a local database
- Local Git Repository Structure:
- Working Directory - actual files reside here
- Index - area used for staging
- Head - most up-to-date commit
- Saving Changes
- Tracked - tracked files can be modified, unmodified, or staged; they were part of the most recent file snapshot
- Untracked - untracked files were not in the last snapshot and do not currently reside in the staging area
Other Notes
- Give messages to commits that act as captions for your snapshot
- One project = one repository (unless very large project)