git branch merge, pulling the remote branch, merging into other different cases of operation command git

Case 1: The local branches have dev, dev no remote branch, to be submitted to the local branch of the remote dev dev branch

              First switch to dev branch: Git Checkout dev

　　　　Detecting whether the promising submission: git status

　　　　Submissions will not be added to the staging area: git add (or git add specific file name).

　　　    Submit to the staging area