Firebase CLI reference: firebase.google.com/docs/cli

• List Projects :

  >firebase projects:list
  

• Change Projects :

  >firebase use <proj_name>
  

• List Hosting Sites :

  >firebase hosting:sites:list
  

• Deploy :

  >firebase deploy
  

  Commands for deploying multiple sites linked to a project: firebase.google.com/docs/hosting/multisites
• Deploy targets : Set Target name for each of the sites created

  >firebase target:apply hosting <target_name> <resource_identifier>
  

  in firebase.json, add the below parameter under "hosting" to reference the site that needs to be deployed with the deploy command

"target": "<target_name>"