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.
• Generate a personal access token.
• 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):

  git init
  git config user.email "[email protected]"
  git config user.email
  git config user.name "Huy Bien"
  git config user.name
  git config credential.helper ""
  cd C:\Users\admin\Downloads\code
  git remote add origin -f https://github.com/huybien/asp.net-core.git
  git pull origin main
  / * or * /
  git pull origin master
  / * Enter username and token. */

• 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 config user.email "[email protected]"
  git config user.email
  git config user.name "Huy Bien"
  git config user.name
  git config credential.helper ""
  git remote add origin https://github.com/huybien/asp.net-core.git
  git fetch --all
  / * Enter username and token. */
  git add *.*
  git commit -m "new files added"
  git push -u origin main
  / * Enter username and token. */

• Push local files to a remote empty repository:

  git init
  git config user.email "[email protected]"
  git config user.email
  git config user.name "Huy Bien"
  git config user.name
  # Tell Git to use the Git Credential Manager as its credential helper, which is a tool that securely stores and retrieves credentials (such as usernames, passwords, and personal access tokens) when interacting with remote repositories over HTTPS.
  git config credential.helper manager
  git config credential.username huybien
  git config --global credential.useHttpPath true
  git config --global credential.helper manager
  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 config user.email "[email protected]"
  git config 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 .

• Display remote URL:

  git config --get remote.origin.url

• Discard local changes of file:

  git restore "Features/01_How-to Guides.png"

• Update GitHub personal access token:

  # On Windows: Go to Control Panel, open Credential Manager, click Windows Credentials tab, and remove all stored Git accounts.
  # Tell Git to remember your personal access token so that you don't have to re-enter them every time you push, pull, or fetch from a remote repository.
  git config --global credential.helper manager
  # Tell Git to key credentials by full path (host + owner + repo).
  git config --global credential.useHttpPath true
  # Set explicit username per repo (helps the helper pick the right entry).
  git config credential.username your-personal-username
  # First pull will ask for credentials
  git pull
  # After entering the token, it will be saved for future use.