SubOS explained

In computing, a SubOS may mean several related concepts:

• A process-specific protection mechanism allowing potentially dangerous applications to run in a restricted environment.^[1] It worked by setting a sub-user id which was user id of the owner of the file rather than the person running the file.^[2]
• A substitute-operating system, which simulated a full operating system. These were mainly developed by the GameMaker community.
• An interface (graphical or terminal based) that provides additional functions or command for a specific audience target.

It can also make processes easier and add details to the main operating system.

See also

• Virtual machine
• Sandbox (computer security)

Notes and References

1. Web site: Ioannidis . Sotiris . Bellovin . Steven M. . Smith . Jonathan M. . May 27, 2024 . Sub-Operating Systems: A New Approach to Application Security . May 27, 2024 . Department of Computer Science, Columbia University.
2. Web site: Ioannidis . Sotiris . April 28, 2001 . SubOS-enabled Operating Systems . October 21, 2021 . USENIX: The Advanced Computing Systems Association.