Adds

index.html

to staging area

git add index.html

Adds

any html file

to staging area

git add *.html

Adds several files to staging area

git add index.html another.html index.php

Adds modified and deleted files only

git add -u  /  git add --update

Adds modified and new files only (but not new files without names)

git add *

Adds all the changes - modified, new and deleted files (

-A

is a short handhand notation for

--all

)

git add .  /  git add --all  /  git add -A

Adds all files including files with no names (ignores deleted files)

git add . --no-all  / git add . --ignore-removal

If we want to commit only part of changes of the same file

--patch

or

-p

is used

git add --patch   /   git add -p

Possible answers for the command:

y

stage this hunk for the next commit

n

do not stage this hunk for the next commit

q

quit; do not stage this hunk or any of the remaining hunks

a

stage this hunk and all later hunks in the file

d

do not stage this hunk or any of the later hunks in the file ... The complete list of the possible answers is on the link of the note