Git is a distributed version-control system for tracking changes in source code during software development. It is designed for coordinating work among programmers, but it can be used to track changes in any set of files. Its goals include speed, data integrity, and support for distributed, non-linear workflows.
clone repository
$ git clone
update repository
$ git pull
add file
$ git add <file>
remove file
$ git rm <file>
list branch
$ git branch
change the repository
$ git checkout <repository>
commit
$ git commit -m "description" <file>
$ git status
$ git push
git logs
$ git log --decorate=short
git logs
$ git log --oneline
new branch
$ git checkout -b patch1
$ git push origin patch1