Findings:
- Operating system
- Domain Operating System
- Disk Operating System
- fringe operating systems
- Linux-based operating system
- Be Operating System
- real operating system
- Guardian Operating System
- actual operating system locales
- Toy operating systems
- Unix-like operating systems
- Operating Systems Design and Implementation
- Self-updating operating system
- "operating system" loophole in the GNU GPL
- They forgot to give me the operating system!
- Windows 95 Operating System Components
- Modern Operating Systems
- How an operating system boots
- X-OS: eXtreme operating system
- The man behind the operating system
- Internetwork Operating System
- batch operating system
- real-time operating system
- The perfect operating system
- Pink operating system
- Operating Systems (e2poll)
- Windows (operating system)
- M&M's standard operating procedure for bored engineers
- Train Operating Company
- Radar operating modes
- Operating Instructions
- Net Operating Loss
- standing but not operating
- International Union of Operating Engineers
- Standard Operating Procedure
- operating profit
- Regional Bell Operating Company
- Bell Operating Company
- operating ratio
- Operating Missions as Nodes on the Internet: IP in Space
- The Operating Theater
- Operating Room drama
- Operating Manual for Spaceship Earth
- windowing system
- X Window System
- file system
- Bulletin Board System
- System
- Elephant Memory Systems
- Systems Administrator
- Online Systems Services, Inc.
- limitations of the system
- Sound Systems
- Essential System Administration
- Emergency Brain-Dump System
- Global System for Mobile communications
- metric system
- Two-party system
- Honor system
- solar system
- HERO System
- systems music
- value system
- systems engineer
- Computational and Neural Systems
- Microsoft Certified Systems Engineer
- rating system
- System management
- immune system
- imperial system
- retinal imaging
- systems engineering
- System 7
- public transit system
- system call
- Geographic Information System
- extended nervous system
- single system image
- system engineer
- General Systems Theory
- complement system
- Nintendo Entertainment System
- Super Nintendo Entertainment System
- nervous system
- circulatory system
- belief system
- Biological system of classification
- central nervous system
- roleplaying game system
- Fountain pen filling system
- hypertext systems
- writing system
- Master System
- The buddy system
- Feudal System
- decimal system
- Computer naming system
- Dewey Decimal System
- MIU
- TNT system
- Hynek Classification System
- lymphatic system
- Advanced Photo System
- Reproductive System
- digestive system
- Catholic indoctrination resides in the limbic system
- limbic system
- magnetic guidance systems
- University System of Maryland
- Public Address system
- Sienar Fleet Systems
- Two party system
- Ptolemaic system
- Copernican system
- Endocrine system
- System 5
- System 6
- object oriented database systems
- expert system
- Nielsen Ratings System
- The good thing about using a horribly outdated file system
- Emergency Broadcast System
- Eisenhower Interstate System
- Distributed system
- Integrated Court System
- Parallel Court System
- file system checker
- confederated systems
- System 16
- Symbolic Systems
- weapons systems
- root system
- Xerox Network Systems
- just a life-support system for a penis
- systems theory
- voting systems
- Reticular activating system
- Go to Hell - A voting system
- legal system
- judicial system
- formal system
- Autonomous System
- THX sound system
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