Set default branch

git config --global init.defaultBranch main
git branch -m main

Add your name and email

git config --global user.name "Frank Earnhardt"
git config --global user.email "frank.earnhardt@outlook.com"

Fix commit made before adding user.name and .email

git commit --amend --reset-author

Set Crediential Store

# WARNING: This will store your credentials in ~/.git-credentials
# WARNING: cat ~/.git-credentials
# WARNING: https://earnhardt:27*****67@gitea.remote-tech.us
# WARNING: syntax: https://<user>:<api_key>@<gitea-url>

git config --global credential.helper store

git config --global credential.helper "cache --timeout=3600"

Publish Container

echo $GITHUB_TOKEN | docker login ghcr.io -u USERNAME --password-stdin 
docker tag IMAGE_ID ghcr.io/OWNER/IMAGE_NAME:latest 
docker push ghcr.io/OWNER/IMAGE_NAME:latest

To authenticate using a GitHub Actions workflow, you can use a GITHUB_TOKEN:
For package registries at PACKAGE-REGISTRY.pkg.github.com.
For the container registry at ghcr.io/OWNER/IMAGE-NAME.

Show current branch

1. Using Command Prompt
Run the following command to display the current branch name:

git rev-parse --abbrev-ref HEAD

2. Using PowerShell
PowerShell allows for more customization. You can create a function to display the branch name dynamically in your prompt.
Steps:
* Open PowerShell and edit your profile: with “notepad $PROFILE”, paste in following and restart PowerShell

function Prompt {
    $gitBranch = git rev-parse --abbrev-ref HEAD 2>$null
    if ($gitBranch) {
        "PS [$gitBranch] $(Get-Location)> "
    } else {
        "PS $(Get-Location)> "
    }
}

git undo options

Undo Last Commit and Keep Your Changes (Undo only the commit) 
If you made a mistake in the commit message or forgot to include a file,
use one of these:

• Soft Reset (Keep staged): 
  Moves your changes back to the “staged” area (ready to commit again immediately).

git reset --soft HEAD~1

• Mixed Reset (Keep unstaged): 
  Moves changes back to your working directory (not staged).

git reset HEAD~1

• Amend (Just fix the last commit): 
  If you just want to edit the message or add a missing file without “undoing” everything.

git commit --amend -m "New message"

•  Destroy Your Changes (Total undo) 

If you want to completely delete the last commit and wipe out all work associated with it,
use a hard reset. 

⚠️ Warning: This cannot be undone easily. Your uncommitted work will be lost.

git reset --hard HEAD~1

•  If You Already Pushed

If the commit is already on a remote server (like GitHub), do not use reset, as it rewrites history and breaks things for your team.
Instead, use revert, which creates a new commit that cancels out the previous one.

git revert HEAD
git push origin <branch-name>

Quick Reference Table

Goal	Command	History Impact
Keep changes as staged	git reset --soft HEAD~1	Rewrites history
Keep changes as unstaged	git reset HEAD~1	Rewrites history
Delete changes forever	git reset --hard HEAD~1	Rewrites history
Undo after push	git revert HEAD	New commit added