A new utility for the Actian / Pervasive PSQL database engine has been released. This utility, PsqlDbCreate, offers the ability to create PSQL database names using a command line interface on Windows. While dbmaint exists on Linux, there is no equivalent tool on Windows. This tool aims to fill that need.
All the information you might need is available on the PsqlDBCreate page.
PsqlDBCreate can also be downloaded here.