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USENIX Windows NT Workshop, 1997

OPENNT: UNIX Application Portability to Windows NT via an Alternative Environment Subsystem

Stephen R. Walli
Softway Systems, Inc.
San Francisco, CA


It has become too expensive to continually rewrite applications to move them from system to system, and source code portability is an important tool to protect existing applications investments. Our experience clearly demonstrates that the Windows NT architecture of alternative environment subsystems provides a way to accomplish this. OPENNT provides the facilities of a traditional UNIX system on Windows NT, such that existing applications developed on traditional UNIX systems can be directly brought to Windows NT, rebuilt, and deployed. Using the environment subsystem architecture of Windows NT, a peer environment to the Win32 world exists, and is integrated to that world in a manner most logical to both.
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