In this module, you will get hands-on experience working with Git and its advanced concepts.

DevOps for Developers

Git is one of the most widely used version control tools, and is something that every developer should become comfortable with. In this module, you will get hands-on experience working with Git so that when it comes time to use it, you’ll be ready.

You’ll start by learning some of the more fundamental concepts such as initializing a Git repository, adding files to a repository, and how to commit changes. You’ll also learn how to clone a repository, and how to create branching.

You’ll then make your way to some more advanced concepts like Git stash, cherry-picking, working with multiple repositories, pushing code, and a lot more.

By the end of this module, you will have a proficient and working knowledge of Git which will serve you well throughout your career.

Git and GitHub

The previous pre-commit scripts were fairly limited in their usefulness. But just to give a flavor of what’s possible, you’re going to give an example that is able to choose whether to allow or reject a commit based on its content.


## Banning keywords

Imagine that you’ve decided against o allowing any mention of politics in your code. The following hook will reject any mention of politics (or any word beginning with “politic”).


```Shell
1	echo 'a political comment' >> file1
2	cat > .git/hooks/pre-commit << EOF
3	> if grep -rni politic *
4	> then
5	> 	echo 'no politics allowed!'
6	> 	exit 1
7	> fi
8	> echo OK
9	> exit 0
10	> EOF
11	git commit -am 'Political comment'
```

The previous pre-commit scripts were fairly limited in their usefulness. But just to give a flavor of what’s possible, you’re going to give an example that is able to choose whether to allow or reject a commit based on its content.


# Banning keywords

Imagine that you’ve decided against o allowing any mention of politics in your code. The following hook will reject any mention of politics (or any word beginning with “politic”).


```Shell
1	echo 'a political comment' >> file1
2	cat > .git/hooks/pre-commit << EOF
3	> if grep -rni politic *
4	> then
5	> 	echo 'no politics allowed!'
6	> 	exit 1
7	> fi
8	> echo OK
9	> exit 0
10	> EOF
11	git commit -am 'Political comment'
```

To get a better understanding of hooks, examine a more sophisticated example.

Before We Begin

Introduction to Git

Git Basics

Clone a Repository

Git Branching

Merging

Git Stash

Git Add Interactive

Reflog

Cherry Picking

Git Rebase

Git Bisect

Fetching and Pulling Content

Working With Multiple Repositories

Pushing Code

Git Submodules

Pull Requests

Git Log

Squashing Commits

Bare Repositories

Cherry-Picking and Three-Way Merges

Git Hooks

Conclusion

A More Sophisticated Example

Banning keywords