Commit

With the changes made, we can take a look at the status of our branch

At this point, we could use git add . as in Section 1.3.2, but Git provides the -a flag as a shortcut for the (very common) case of committing all modifications to existing files (or files created using git mv, which don’t count as new files to Git):

Be careful about using the -a flag improperly; if you have added any new files to the project since the last commit, you still have to tell Git about them using git add first

        Note that we write the commit message in the present tense. Git models commits as a series of patches, and in this context it makes sense to describe what each commit does, rather than what it did. Moreover, this usage matches up with the commit messages generated by Git commands themselves. See the GitHub post Shiny new commit styles for more information.