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Operating Systems
Operating Systems

... memory control info, etc.) transparently to user process. Note on terminology. It’s common to use ‘process’ for task with independent address space, espec. in Unix setting, but this is not a universal definition. Tasks sharing the same address space are called ‘tasks’ (IBM) or ‘threads’ (Unix). But ...
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Lesson 1 Computers and Operating Systems PPT

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Security-focused operating system

This is a list of operating systems with a sharp security focus. Here, ""security-focused"" means that the project is devoted to increasing the security as a major goal. As such, something can be secure without being ""security-focused."" For example, almost all of the operating systems mentioned here are faced with security bug fixes in their lifetime; however, they all strive to consistently approach all generic security flaws inherent in their design with new ideas in an attempt to create a secure computing environment. Security-focused does not mean security-evaluated operating system, which refers to operating systems that have achieved certification from an external security-auditing organization. An operating system that provides sufficient support for multilevel security and evidence of correctness to meet a particular set of government requirements is called a ""trusted operating system"".The list is alphabetical and does not imply a ranking.
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