Top Document: Unix - Frequently Asked Questions (6/7) [Frequent posting] Previous Document: Real-time Unices. See reader questions & answers on this topic! - Help others by sharing your knowledge Date: Tue Aug 15 15:14:00 EDT 1995 X-Version: 2.9 6.8) Unix glossary. This section provides short definitions of various concepts and components of (or related to) Unix systems. Chorus: message-passing microkernel, may form basis for a future release of SV. Chorus already have SVR4 running on top (binary-compatible). CORBA (Common Object Request Broker Architecture). COSE (Common Open Software Environment) [Sun, HP, IBM]: common look and feel (Motif -- Sun will let OpenLook fade away), common API. Reaction against Windows NT. See section 6.4 above. DCE (Distributed Computing Environment, from OSF): Includes RPC (Apollo's NCS), directory service (local based on DNS, global on X.500), time, security, and threads services, DFS (distrib. file system), .... OS-independent. DME (Distributed Management Environment, from OSF): future. DO (Distributed Objects [Enterprise]): ???. FFS (Fast File System): from Berkeley, 1983. Equivalent (exact?) of UFS in SunOS. Has notions such as cylinder groups, fragments. FSF (Free Software Foundation) Mach: modern kernels from CMU (Carnegie Mellon University) on which many Unices and other OSs are based (e.g. OSF/1, MacMach, ...): - 2.5: monolithic kernel with 4.2BSD - 3.0: microkernel with BSD Unix server in user space (and other OSs, e.g. MS-DOS) Newsgroup: comp.os.mach MFS (Memory File System): NeWS (Network extensible Window System), from Sun?: PostScript-based, networked, toolkits (and even clients) loaded in server. Part of OpenWindows. NFS (Network File System): contributed by Sun to BSD, stateless server ONC (Open Network Computing): from Sun(?), includes RPC, name service (NIS aka YP), NFS, ... (found in many Unices, other OSs). OpenStep [NeXT, Sun]: ??? PowerOpen: both a standard, and an organization promoting PowerPC. Involves IBM, Apple and Motorola; others? See section 6.4 above. PowerPC (PPC): a RISC CPU chip [IBM, Motorola]. RFS (Remote File System): SV, stateful server, incompatible with NFS RPC (Remote Procedure Call): high-level IPC (inter-process communication) mechanism. Two flavors. - ONC: Over TCP or UDP (later OSI), uses XDR to encode data. - DCE: has a different RPC mechanism (based on Apollo's NCS) S5 FS: System V's native file system, blocks 512 to 2K. sockets: BSD interface mechanism to networks (compare TLI). STREAMS: a message-passing kernel mechanism, initially in SVR3, which provides a very good interface for protocol development. TFS (Translucent File System): Sun, COW applied to files. TLI (Transport Library Interface): SV's interface to transport services (TCP, OSI). UI has also defined an APLI (ACSE/Presentation Library Interface) UFS (?): BSD's native file system as seen in SunOS, blocks 4K to 8K, cylinder groups, fragments. XTI (X/Open Transport Interface): TLI with enhancements X11: pixel-oriented window system from MIT. ------------------------------ End of unix/faq Digest part 6 of 7 ********************************** -- Ted Timar - tmatimar@isgtec.com ISG Technologies Inc., 6509 Airport Road, Mississauga, Ontario, Canada L4V 1S7 User Contributions:Comment about this article, ask questions, or add new information about this topic:Top Document: Unix - Frequently Asked Questions (6/7) [Frequent posting] Previous Document: Real-time Unices. Part1 - Part2 - Part3 - Part4 - Part5 - Part6 - Part7 - Single Page [ Usenet FAQs | Web FAQs | Documents | RFC Index ] Send corrections/additions to the FAQ Maintainer: tmatimar@isgtec.com (Ted Timar)
Last Update March 27 2014 @ 02:12 PM
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