"Git add-a" is equivalent to "Git Add.; git add-U ".

• git add -AStages all
• git add .Stages new and modified, without deleted
• git add -uStages modified and deleted, without new

git initecho Change me > change-meecho Delete me > delete-megit add change-me delete-megit commit -m initialecho OK >> change-merm delete-meecho Add me > add-megit status# Changed but not updated:#   modified:   change-me#   deleted:    delete-me# Untracked files:#   add-megit add .git status# Changes to be committed:#   new file:   add-me#   modified:   change-me# Changed but not updated:#   deleted:    delete-megit resetgit add -ugit status# Changes to be committed:#   modified:   change-me#   deleted:    delete-me# Untracked files:#   add-megit resetgit add -Agit status# Changes to be committed:#   new file:   add-me#   modified:   change-me