How to set up and use multiple Github account correctly on the same machine

multiple_github_account.md

setting up authentication for each Github account

ref

config file

• have one entry for each account in the ~/.ssh/config file

For the secondary Github account, choose a different Host value.

Host github.{SECONDARY_KEYWORD}.com
	HostName github.com
	User SECOND_ACCOUNT_USERNAME
	IdentityFile ~/.ssh/SECONDACCOUNT
	PreferredAuthentications publickey
	IdentitiesOnly yes
	ForwardX11Trusted no
	ForwardX11 no

Then when you set up the remote origin URLs for the secondary account should be changed from:

origin  [email protected]:${SECOND_ACCOUNT_USERNAME}/${GIT_REPO_NAME}.git

to

origin  git@github.${SECONDARY_KEYWORD}.com:${SECOND_ACCOUNT_USERNAME}/${GIT_REPO_NAME}.git

by using the command

git remote set-url origin git@github.${SECONDARY_KEYWORD}.com:${SECOND_ACCOUNT_USERNAME}/${GIT_REPO_NAME}.git