Git Basics

- Setting user name and email
```bash
git config --global user.name "Guangning Yu"
git config --global user.email "hi@guangningyu.com"
```

- Showing remotes
```bash
git remote -v
```

- Changing a remote’s URL
```bash
git remote set-url origin git@github.com:guangningyu flasky.git
```

- Pulling from remotes
```bash
git pull origin master
```

- Pushing to remotes
```bash
git push origin master
```

- Commit using default message
```bash
git commit —no-edit
```

- Cancel last commit
```bash
git reset HEAD~
```

- Undo a git add
```bash
git reset filename.txt
```

- Define author & committer
```bash
GIT_COMMITTER_NAME='Jane Doe' GIT_COMMITTER_EMAIL='jane@doe.com' git commit —author="John Doe <john@doe.com>" -m "This is authored by John Doe and committed by Jane Doe."
```

- Undo git rm
```bash
git checkout HEAD path/to/file
```

- Check out a remote branch
```bash
git branch -a
git checkout test_branch
```

- Create a new branch
```bash
git checkout -b [name_of_your_new_branch]
```

- Push a local branch to remote
```bash
git push -u origin [name_of_your_local_branch]
```

- Delete a local branch
```bash
git branch -d [branch_name]
```

- Remove untracked files
```bash
git clean -fd
```

- Discard unstaged changes
```bash
git checkout — .
```

- Force full remote branch
```bash
git reset —hard origin/master
```

- Merge master branch into feature branch
```bash
git checkout feature1
git merge master
```

- Delete git history ([reference](https://stackoverflow.com/questions/9683279/make-the-current-commit-the-only-initial-commit-in-a-git-repository/13102849#13102849))
```
git clone git@bitbucket.org:oliverwymantechssg/c19-credit-analytics-tool.git
git checkout --orphan new-branch
git add -A
git commit -m "release 1.0"
git branch -D master
git branch -m master
git gc --aggressive --prune=all
```

- Change editor
```
git config --global core.editor vim
```

- Unstage deleted files
```
git reset -- .
git checkout -- .
```

- Delete a remote tag
```
git push --delete origin YOUR_TAG_NAME
```

- Add a tag
```
git tag <tag_name>
```

- Push tags to remote
```
git push origin ZAW-1.0.0
```
or
```
git push --tags
```