Add subdomain via SSH
cpapi2 --user=USERNAME SubDomain addsubdomain domain=SUBDOMAINFIRSTNAME rootdomain=PRIMARYDOMAINNAME dir=%2Fpublic_html/PATH disallowdot=1
List subdomain via SSH
cpapi2 --user=USERNAME SubDomain listsubdomains regex=DOMAINNAME return_https_redirect_status=1
Remove subdomain via SSH
cpapi2 --user=USERNAME SubDomain delsubdomain domain=subdomain.example.com