How to update changes to github repo using cmd code example

Example 1: Adding an existing project to GitHub using the command line

1- # Create a new repository on GitHub. To avoid errors, do not initialize the new repository with README, license, or gitignore files. You can add these files after your project has been pushed to GitHub.

2- # Open Terminal.

3- # Change the current working directory to your local project.

4- # Initialize the local directory as a Git repository.
$ git init

5- # Add the files in your new local repository. This stages them for the first commit.
$ git add .
# Adds the files in the local repository and stages them for commit. To unstage a file, use 'git reset HEAD YOUR-FILE'.

6- # Commit the files that you've staged in your local repository.
$ git commit -m "First commit"
# Commits the tracked changes and prepares them to be pushed to a remote repository. To remove this commit and modify the file, use 'git reset --soft HEAD~1' and commit and add the file again.

7- # At the top of your GitHub repository's Quick Setup page, click  to copy the remote repository URL.

8- # In Terminal, add the URL for the remote repository where your local repository will be pushed.
$ git remote add origin <remote repository URL>
# Sets the new remote
$ git remote -v
# Verifies the new remote URL

9- # Push the changes in your local repository to GitHub.
$ git branch -M main
$ git push -u origin main
# Pushes the changes in your local repository up to the remote repository you specified as the origin

Example 2: how to send your code to github

We make a change in one branch, and we want carry that
change to another branch. In order two merge two branches,
we need to
1. Switch to the branch where we want to take the changes to.
git checkout master(recently changed to main)
2. Run the merge command by mentioning the branch name
where the changes are.
git merge develop
Takes the changes from develop and merges into my current
branch (master)
git branch -d <branch_name> deletes the branch.
If we have unmerged changes, this command gives a warning
and does not delete.
git branch -D <branch_name> deletes the branch even if it has
unmerged changes. Gives no warning.
git push --set-upstream origin <branch_name> it creates a
new branch with given name in the remote and pushes the
changes from local branch to the new branch.