Git

Diagram

Initial configuration:

1git config --global user.name "$first_name $last_name"
2git config --global user.email "user@example.com"

Initialize repository:

1git init && git commit --allow-empty -m 'Initial commit'

:bar_chart: Show the working tree status:
```
1git status
```
:heavy_plus_sign: Stage changes in a file to the index:
```
1git add "$filename"
```
Show unstaged changes (diff between the working tree and the index):
```
1git diff
```
Show staged changes in the index (diff between the index and the HEAD):
```
1git diff --cached
```
:heavy_minus_sign: Unstage a file, keep changes in the working directory:
```
1git reset "$filename"
```
Clear the index, update the working tree from the specified commit:
```
1git reset --hard "$commit"
```

:green_circle: Create a new branch from the current commit (HEAD):

1git checkout -b "$branch"

1git branch "$branch" && git switch "$branch"

1git switch -c "$branch"

:arrow_right_hook: Switch to a branch (update working tree and index):
```
1git checkout "$branch"
```
```
1git switch "$branch"
```
Merge the specified branch into the current one:
```
1git merge "$branch"
```
Apply commits of current branch ahead of the specified one:
```
1git rebase "$branch"
```
Rename branch:
```
1git branch -m "$new_branch"
```
:red_circle: Delete branch:
```
1git branch -d "$branch"
```