$ cd ~
$ cd ..
$ cd "child folder"
$ mkdir "new folder"
$ touch "new file"
$ ls
$ pwd
$ explorer .

Git clone
Git checkout -b "branch name" : only use -b to add new branch
Git add -A : -A for all files
Git commit -m "Comment" 
Git push origin "branch name"
Git pull

cf login -a api.run.pivotal.io
cf help
cf push your_app