How to used Github's Personal access token

set global config username and email: 

git config --global user.name "username"

git config --global user.email "email address" 

show config:

git config -l 

store credential in cache: 

git config --global credential.helper cache 

ex. 7 days

git config --global credential.helper 'cache --timeout=604800' 

1 day 86400 second

7 day 604800 second

30 day 2592000 second

remove credential:

git config --global --unset credetial.helper