z/OS UNIX System Services (z/OS UNIX, or informally USS) is a base element of z/OS. z/OS UNIX is a certified UNIX operating system implementation (XPG4...
6 KB (553 words) - 14:22, 27 January 2025
Unix (/ˈjuːnɪks/ , YOO-niks; trademarked as UNIX) is a family of multitasking, multi-user computer operating systems that derive from the original AT&T...
59 KB (6,135 words) - 21:49, 25 April 2025
A Unix-like (sometimes referred to as UN*X, *nix or *NIX) operating system is one that behaves in a manner similar to a Unix system, although not necessarily...
16 KB (1,799 words) - 14:07, 23 May 2025
Windows Services for UNIX (SFU) is a discontinued software package produced by Microsoft which provided a Unix environment on Windows NT and some of its...
23 KB (2,376 words) - 14:48, 8 May 2025
Unix System V (pronounced: "System Five") is one of the first commercial versions of the Unix operating system. It was originally developed by AT&T and...
29 KB (3,072 words) - 03:35, 26 May 2025
Daemon (computing) (redirect from Operating system services)
exclusively in the context of Unix-based systems. In other contexts, different terms are used for the same concept. Systems often start daemons at boot...
13 KB (1,461 words) - 05:43, 26 May 2025
Unix System Laboratories (USL), sometimes written UNIX System Laboratories to follow relevant trademark guidelines of the time, was an American software...
47 KB (4,439 words) - 20:49, 17 October 2024
Darwin is the core Unix-like operating system of macOS, iOS, watchOS, tvOS, iPadOS, audioOS, visionOS, and bridgeOS. It previously existed as an independent...
46 KB (2,765 words) - 05:17, 27 June 2025
Econet (section Unix system services)
Unix workstations running RISC iX, an envisaged application for Econet was the use of Master 128 computers acting as terminals to these Unix systems.: 4 ...
33 KB (3,422 words) - 05:33, 14 October 2024
Single UNIX Specification (SUS) is a standard for computer operating systems, compliance with which is required to qualify for using the "UNIX" trademark...
39 KB (3,853 words) - 22:33, 18 May 2025
Z/OS (category IBM mainframe operating systems)
infrastructure, and UNIX (Single UNIX Specification) APIs and applications through UNIX System Services – The Open Group certifies z/OS as a compliant UNIX operating...
20 KB (2,256 words) - 15:54, 28 February 2025
IBM AIX (redirect from Advanced IBM UNIX)
(pronounced /ˌeɪ.aɪ.ˈɛks/ ay-eye-EKS) is a series of proprietary Unix operating systems developed and sold by IBM since 1986. The name stands for "Advanced...
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GNU (redirect from GNU's Not Unix)
for "GNU's Not Unix!", chosen because GNU's design is Unix-like, but differs from Unix by being free software and containing no Unix code. Stallman chose...
34 KB (3,103 words) - 12:33, 26 June 2025
Time Sharing Option (category IBM mainframe operating systems)
called TSO/ISPF. TSO can also provide a Unix-style environment on OS/390 and z/OS via the UNIX System Services command shell, with or without ISPF. TSO...
6 KB (831 words) - 22:14, 3 May 2025
Unix epoch. For example, at midnight on 1 January 2010, Unix time was 1262304000. Unix time originated as the system time of Unix operating systems....
51 KB (5,461 words) - 21:22, 22 June 2025
MVS (redirect from MVS Operating System)
Release 6". IBM. 24 February 1998. 298-049. UNIX System Services "1.3.9 OS/390 V2R6 - 1998". UNIX System Services z/OS Version 1 Release 7 Implementation...
49 KB (5,945 words) - 15:26, 4 February 2025
Berkeley Software Distribution (redirect from BSD Unix)
also known as Berkeley Unix or BSD Unix, is a discontinued Unix operating system developed and distributed by the Computer Systems Research Group (CSRG)...
26 KB (2,872 words) - 11:34, 2 May 2025
UnixWare is a Unix operating system. It was originally released by Univel, a jointly owned venture of AT&T's Unix System Laboratories (USL) and Novell...
26 KB (2,296 words) - 00:29, 2 June 2025
Tru64 UNIX is a discontinued 64-bit UNIX operating system for the Alpha instruction set architecture (ISA), currently owned by Hewlett-Packard (HP). Previously...
13 KB (934 words) - 17:32, 10 June 2025
Unix security refers to the means of securing a Unix or Unix-like operating system. A core security feature in these systems is the file system permissions...
5 KB (524 words) - 13:11, 2 February 2025
It is based on the experience of leading developers of the Unix operating system. Early Unix developers were important in bringing the concepts of modularity...
18 KB (2,178 words) - 09:47, 23 May 2025
Ritchie, Dennis M. (1977). The Unix Time-sharing System: A retrospective (PDF). Tenth Hawaii International Conference on the System Sciences. Archived (PDF)...
32 KB (3,357 words) - 23:26, 31 March 2025
The Name Service Switch (NSS) is a feature found in the standard C library of various Unix-like operating systems that connects a computer with a variety...
5 KB (592 words) - 09:17, 2 March 2025
v4 UNIX Time-Sharing System v5 UNIX Time-Sharing System v6 MINI-UNIX PWB/UNIX USG CB Unix UNIX Time-Sharing System v7 (It is from Version 7 Unix (and...
73 KB (8,384 words) - 16:49, 4 June 2025
Z Application Assist Processor (redirect from System z Application Assist Processor)
IMS, and (JZOS and z/OS UNIX System Services) Batch, among others. In 2007, IBM added zAAP support to the XML System Services for z/OS, so now products...
4 KB (587 words) - 01:24, 27 February 2023
In Unix and operating systems inspired by it, the file system is considered a central component of the operating system. It was also one of the first parts...
16 KB (944 words) - 14:20, 13 April 2025
MUSIC/SP (redirect from Multi-User System for Interactive Computing/System Product)
Microsoft Windows and Unix systems. In 1990 a "tree-structured" directory view of the file system was overlaid on this, bringing the system more in line with...
11 KB (1,252 words) - 17:53, 26 April 2025
Dbx (debugger) (category Unix programming tools)
Studio compilers and GCC. It is also available on IBM z/OS systems, in the UNIX System Services component. dbx for z/OS can debug programs written in C and...
4 KB (349 words) - 23:33, 2 December 2023
Linux on IBM Z (redirect from Linux on System z9)
Comparison of Linux distributions IBM Secure Service Container OpenSolaris for System z Linux on Power UNIX System Services zIIP zAAP z/TPF z/VSE Vepstas, Linas...
22 KB (2,331 words) - 01:35, 31 December 2024
CUPS (redirect from Common Unix Printing System/Proposed baseline)
(formerly an acronym for Common UNIX Printing System) is a modular printing system for Unix-like computer operating systems which allows a computer to act...
36 KB (3,644 words) - 12:19, 23 February 2025