# Git

[Git](https://git-scm.com/) is a version control system for code projects.

#### Download (Debian)
```bash
apt install git
```

#### Initialize Git repository
```bash
git init
```

#### Add all changes as new commit
```bash
git add .
git commit -am "The commit message goes here"
```

#### Create a new branch

``` bash
git checkout -b the_name_of_the_new_branch
```

#### Merge two branches

```bash
git merge name_of_the_brach_to_merge
```

See also [how to git merge without changing anything](git-merge-without-changing-anything.md)

#### List all branches (remote and local)

```bash
git branch -v -a
```

#### Switch to an branch

```bash
git switch name_of_the_branch_to_switch_to
```

#### Delete a branch

local:
```bash
git branch -d name_of_branch
```
remote
```bash
git push -d remote_name branch_name
```

When the branch was deleted in the remote by a third party you can remove the corresponding local remote branch by running:

```bash
git fetch -p
```
#### Undo git add

```bash
git reset
```

#### Discard local changes

```bash
git reset --hard HEAD
```

```bash
# Print all untracked files that can be deleted
git clean -n -d 

# Delete all untracked files and directories
git clean -fd
```

#### Get url of remote

```bash
git remote get-url name_of_remote_probably_origin 
```
#### Set url of remote

```bash
git remote set-url name_of_remote_probably_origin name_of_the_url
```
## Set user name and email
```
git config user.name "<your name>"
git config user.email "<your mail>"
```


#### Shortcuts

Some of the git commands are also defined as shortcuts in the [bashrc config of the debian-i3-pc-setup](../linux/debian-i3-pc-setup.md)