Motivation:

You want to use Git to version your files or share your files with other people.

Solution:

• Register a GitHub or a GitLab account.
• Create a GitHub repository or a GitLab project.
• Download and install a Git client.
• Pull (checkout) a remote repository (e.g. https://github.com/huybien/asp.net-core.git) to an empty local folder (e.g. C:\Users\admin\Downloads\code).

  cd C:\Users\admin\Downloads\code
  git init
  git remote add origin -f https://github.com/huybien/asp.net-core.git
  git pull origin main
  / * or * /
  git pull origin master

• Pull (checkout) a remote repository (e.g. https://github.com/huybien/asp.net-core.git) to a local folder that contains existing code (e.g. C:\Users\admin\Downloads\code).

  cd C:\Users\admin\Downloads\code
  git init --initial-branch=main
  git remote add origin https://github.com/huybien/asp.net-core.git
  git fetch --all
  git reset --hard origin/main
  git add *.*
  git commit -m "new files added"
  git push -u origin main
  

• Push local files to a remote empty repository.

  git credential-manager delete https://github.com
  git config --global user.email "info@huybien.com"
  git config --global user.email
  git config --global user.name "Huy Bien"
  git config --global user.name
  git init
  git add *.*
  git commit -m "first commit"
  git branch -M main
  git remote add origin https://github.com/huybien/asp.net-core.git
  git push -u origin main

• Push changes to a remote repository.

  git credential-manager delete https://github.com
  git config --global user.email "info@huybien.com"
  git config --global user.email
  git add *.*
  git commit -m "CP form"
  git branch -M main
  git push -u origin main

• Update (fetch and merge) a local repository.

  git pull origin main
  /* or */
  git branch --set-upstream-to=origin/main main
  git pull
  

• Force updating (fetch and overwrite) the current repository.

  git fetch --all 
  git reset --hard origin/main
  git clean -fd 
  git pull

• Force updating (fetch and overwrite) a local repository (e.g. C:\Users\admin\Downloads\code).
  

  git -C C:\Users\admin\Downloads\code fetch --all
  git -C C:\Users\admin\Downloads\code reset --hard origin/main
  git -C C:\Users\admin\Downloads\code clean -fd 
  git -C C:\Users\admin\Downloads\code pull

• Reset (Revert) a local repository to a previous version.

  cd C:\Users\admin\Downloads\code 
  git log --oneline 
  git reset --hard 4355842  
  // where 4355842 is a version id.

• Remove all cached files.

  git rm -r --cached .