how to update github repository from terminal code example

Example 1: how to update git

C:\> git update-git-for-windows

Example 2: git update local repo from master

git pull origin master

Example 3: pushing to github

git add .
git commit -m "First commit"
git push origin master

Example 4: how to update local repo when i make changes to github remote repo

git pull origin master_or_other_branch_name