how to push changes to existing repository github code example

Example 1: git push new repo to remote

$ git remote add origin 
# Sets the new remote

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

Example 2: create new repository on the command line

git init
git add README.MD
git commit -m "commit message"
git remote add origin git url_of_github_repo
git push origin master

Example 3: git push existing code to new repository

git remote add origin 

Example 4: create github repo with bash

winpty curl -H 'Authorization: token [GENERATED_TOKEN]' https://api.github.com/user/repos -d '{"name":"[REPO_NAME_YOU_WANT]"}'

# follow steps here to generate token:
https://help.github.com/en/github/authenticating-to-github/creating-a-personal-access-token-for-the-command-line

# note : you can add parameters to you command to set a description, switch to private, etc...

Example 5: how to push your changes to github

We make a change in one branch, and we want carry that
change to another branch. In order two merge two branches,
I need to
1. Switch to the branch where we want to take the changes to.
git checkout master
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  deletes the branch.
If we have unmerged changes, this command gives a warning
and does not delete.
git branch -D  deletes the branch even if it has
unmerged changes. Gives no warning.
git push --set-upstream origin  it creates a
new branch with given name in the remote and pushes the
changes from local branch to the new branch.