status - report changed files

To see which files have been changed in the repository, use git status:

$ vi README
...edit README file...
$ git status
# On branch master
# Changed but not updated:
#   (use "git add <file>..." to update what will be committed)
#
#	modified:   README
#
no changes added to commit (use "git add" and/or "git commit -a")
$