Findings:

• Pink operating system
• Net Operating Loss
• X-OS: eXtreme operating system
• The man behind the operating system
• standing but not operating
• Internetwork Operating System
• batch operating system
• International Union of Operating Engineers
• real-time operating system
• Standard Operating Procedure
• operating profit
• The perfect operating system
• Operating Instructions
• Regional Bell Operating Company
• Bell Operating Company
• operating ratio
• Operating Missions as Nodes on the Internet: IP in Space
• The Operating Theater
• Operating Systems (e2poll)
• Operating Room drama
• Operating Manual for Spaceship Earth
• Windows (operating system)
• Radar operating modes
• Domain Operating System
• Disk Operating System
• fringe operating systems
• Linux-based operating system
• Be Operating System
• M&M's standard operating procedure for bored engineers
• real operating system
• Train Operating Company
• Guardian Operating System
• 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

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