Git is a distributed version control system.
Git is a free software distributed under the GPL.
Git has a mutable index called stage.
Git tracks change of files.
creating a new branch is quick.
this new branch name dev.
new branch name feater1.
Creating a new branch is quick and simple.
Switched to a new branch 'dev'.
Switched  to a new branch 'master'.
dev restart.
dev.
Second switched to a new branch 'dev'.
a  new bug modified.