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Extensions
- Multithreaded Processes (POSIX threads; Windows threads)
- Virtual memory
- First: 1960
- Unix: 1979
- Windows: 1993
- Mac: 1991 (but optional until ~2001 in OS X)
- Naming
- Files, directories, and devices used the same file naming
conventions
- Linux added the /proc 'directory' or file system that names
other objects including processes, kernel objects
- Object references
- Unix/Linux uses the file naming extensions and file system call
operations on 'objects'
- Windows provides system calls, some with significant
differences for objects: processes, threads, files, pipes,
etc.
- Support for adding devices!
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