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POSIX is the collective name of a family of related standards specified by the IEEE to define the application programming interface (API) for software compatible with variants of the Unix operating system. They are formally designated as IEEE 1003 and the international standard name is ISO/IEC 9945. The standards emerged from a project, begun circa 1985. The term POSIX was suggested by Richard Stallman (not as a compliment) in response to an IEEE request for a memorable name; before that the standards effort was called IEEE-IX. POSIX has been backronymed to Portable Operating System Interface, with the X signifying the Unix heritage of the API.
Overview
POSIX specifies the user and software interfaces to the OS in some 15 different documents. The standard user command line and scripting interface is commonly implemented with the Korn shell. Other user-level programs, services and utilities include awk, echo, ed, and hundreds of others. Required program-level services include basic I/O (file, terminal, and network) services. POSIX also defines a standard threading library API which is supported by most modern operating systems.
Currently POSIX documentation is divided in three parts:
More on [ POSIX ]
POSIX :: Operating Systems
TRON :: Realtime
Services capability. Check. Financing arm. Check.
Sat, 06 Sep 2008 06:40:03 -0700
National Wind, the wind development company focused on encouraging local investment and ownership for its wind projects, has completed its purchase of investment banker Delphi Financial. Given how quickly National Wind is signing new projects, the company figured it made sense to acquire its own renewable energy...
Services capability. Check. Financing arm. Check.
Sat, 06 Sep 2008 06:40:03 -0700
National Wind, the wind development company focused on encouraging local investment and ownership for its wind projects, has completed its purchase of investment banker Delphi Financial. Given how quickly National Wind is signing new projects, the company figured it made sense to acquire its own renewable energy...
Services capability. Check. Financing arm. Check.
Sat, 06 Sep 2008 06:40:03 -0700
National Wind, the wind development company focused on encouraging local investment and ownership for its wind projects, has completed its purchase of investment banker Delphi Financial. Given how quickly National Wind is signing new projects, the company figured it made sense to acquire its own renewable energy...
Microsoft, eat your own dog food
Tue, 26 Aug 2008 08:06:12 -0700
"Eating your own dog food" is an odd software development-related term that describes the importance of ensuring that your own developers use the technology they are creating. When Microsoft has hewed closed to this principle, their products have achieved dominant market shares. Unfortunately, Microsoft is not applying this...
Microsoft, eat your own dog food
Tue, 26 Aug 2008 08:06:12 -0700
"Eating your own dog food" is an odd software development-related term that describes the importance of ensuring that your own developers use the technology they are creating. When Microsoft has hewed closed to this principle, their products have achieved dominant market shares. Unfortunately, Microsoft is not applying this...
Microsoft, eat your own dog food
Tue, 26 Aug 2008 08:06:12 -0700
"Eating your own dog food" is an odd software development-related term that describes the importance of ensuring that your own developers use the technology they are creating. When Microsoft has hewed closed to this principle, their products have achieved dominant market shares. Unfortunately, Microsoft is not applying this...
ARTOS RTOS - A mature 32-bits POSIX OS for Intel and Motorola CPUs, new features added yearly: latest ISDN communication technology, Flash file systems, Java support, OCXen for Visual C++, Delphi and Visual Basic applications, and Internet server facilities. By Locamation Industrial Computer Products.
Integrity RTOS - A secure, no royalty, for high reliability embedded systems; hardware memory protection to isolate and protect it and user tasks from incorrect operation by errors or tampering; object-oriented design allows verification of data security/integrity, communications, individual components, and whole system; strict adherence to provable resource requirements. Ин Green Hills Software, Inc.
Meta Description: [ The POSIX-compliant and royalty-free INTEGRITY Real-Time Operating
System (RTOS) from Green Hills Software uses memory protection and secure partitioning to provide
mission-critical embedded computer-based applications with total reliability and absolute security. ]
KROS - A small (12-64k), standards-based, low cost, no royalty, commercial realtime OS; POSIX, ITRON/uITRON programming interfaces, GNU compiler support, source code provided; supports CPUs: Altera Nios, ARM, Hitachi SuperH. Free downloads: KROS demos, documentation, updates. By Shugyo Design Technologies, Inc.
MaRTE OS - Realtime kernel for embedded uses, follows Minimal Real-Time POSIX.13 subset. Most code is Ada, but some C, assembly. Hardware access via Abstract Hardware Interface (HAL). Runs in cross development environment: PC Linux Host, bare 386 PC Target, Ethernet LAN link. [Open Source, GPL]
REAL/IX PX - A POSIX real-time operating system for x86/Pentium based systems. By Modcomp, Inc.
Roadrunner - One-user, general purpose OS built on a protected memory, POSIX threads RT kernel; full kernel, device drivers, file systems, and network protocols runs in about 200 K RAM; now runs on x86 CPUs but designed for easy portability. [Open source, GPL]
Meta Description: [ Cornfed Systems, LLC, home of Cornfed SIP VOIP, the SIP Softphone for Linux and Embedded Systems. ]
S.Ha.R.K. - Dynamic configurable kernel architecture to support hard/soft/non realtime use with interchangeable scheduling algorithms: fully modular in scheduling policies, aperiodic servers, concurrency control protocols; all not modular in most traditional OSs. Derived from HARTIK: HArd Real TIme Kernel. [Open Source, GPL]
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