Subdomain.exe is designed to manage subdomain accounts. It allows the utilities like creating, renaming, and removing subdomains. It also restricts the use of disk space for subdomains and manages FTP user account for subdomains. For example, create the sample.example.com subdomain in the /httpdocs directory, set the disk space for this subdomain to 500MB and also enable the SSI support. To limit the maximum network use on the subdomain sample.example.com to 500 KB/S use the below command
subdomain.exe -u example.com -traffic-bandwidth 500