Initialize local repo and connect to remote

git add . git 
commit -m "Initial commit"
git branch -M main
git remote add origin https://github.com/username/repository-name.git
git push -u origin main
git remote -v

git add . : stages the changes made to all files.

A git commit command saves the changes you have made (or staged) to the local repository. Each time you run git commit, Git creates a snapshot of your repository at that point. This allows you to roll back to a previous commit whenever needed.
git commit -m "commit_message"

The git push command syncs your remote repository with the local repository. Once you run this command, the remote repository will reflect all the changes you committed locally.
git push <remote> <branch>

https://education.github.com/git-cheat-sheet-education.pdf (below)

SETUP

Configuring user information used across all local repositories
git config --global user.name “[firstname lastname]” set a name that is identifiable for credit when review version history git config --global user.email “[valid-email]”
set an email address that will be associated with each history marker
`git config --global color.ui auto
set automatic command line coloring for Git for easy reviewing

SETUP & INIT

Configuring user information, initializing and cloning repositories
git init initialize an existing directory as a Git repository git clone [url]
retrieve an entire repository from a hosted location via URL

STAGE & SNAPSHOT

Working with snapshots and the Git staging area
git status show modified files in working directory, staged for your next commit git add [file]
add a file as it looks now to your next commit (stage)
git reset [file] unstage a file while retaining the changes in working directory git diff
diff of what is changed but not staged
git diff --staged diff of what is staged but not yet committed git commit -m “[descriptive message]”
commit your staged content as a new commit snapshot

BRANCH & MERGE

Isolating work in branches, changing context, and integrating changes
git branch list your branches. a * will appear next to the currently active branch git branch [branch-name]
create a new branch at the current commit
git checkout switch to another branch and check it out into your working directory git merge [branch]
merge the specified branch’s history into the current one
`git log
show all commits in the current branch’s history

TRACKING PATH CHANGES

Versioning file removes and path changes
git rm [file] delete the file from project and stage the removal for commit git mv [existing-path] [new-path]
change an existing file path and stage the move
git log --stat -M show all commit logs with indication of any paths that moved TEMPORARY COMMITS Temporarily store modified, tracked files in order to change branches git stash
Save modified and staged changes
git stash list list stack-order of stashed file changes git stash pop
write working from top of stash stack
`git stash drop
discard the changes from top of stash stack

REWRITE HISTORY

Rewriting branches, updating commits and clearing history
git rebase [branch] apply any commits of current branch ahead of specified one git reset --hard [commit]
clear staging area, rewrite working tree from specified commit

INSPECT & COMPARE

Examining logs, diffs and object information
git log show the commit history for the currently active branch git log branchB..branchA
show the commits on branchA that are not on branchB
git log --follow [file] show the commits that changed file, even across renames git diff branchB...branchA
show the diff of what is in branchA that is not in branchB
`git show [SHA]
show any object in Git in human-readable format

IGNORING PATTERNS

Preventing unintentional staging or commiting of files
`git config --global core.excludesfile [file]
system wide ignore pattern for all local repositories

SHARE & UPDATE

Retrieving updates from another repository and updating local repos
git remote add [alias] [url] add a git URL as an alias git fetch [alias]
fetch down all the branches from that Git remote
git merge [alias]/[branch] merge a remote branch into your current branch to bring it up to date git push [alias] [branch]
Transmit local branch commits to the remote repository branch
`git pull
fetch and merge any commits from the tracking remote branch