Add files to VCS and then Commit
git add .
Above command will add all files into vcs.
git commit -m writecommitmessage
Revert all uncommitted changes
Below command will only revert the changes in files. It will not revert newly files added to project.
git reset --hard HEADJump to old commit
The command below will jump your code back to second last commit.
git reset --hard HEAD~1