All operating systems (OSs) in this section support POSIX standards fully. The main standard defining what constitutes a Unix OS is POSIX, an acronym for: Portable Operating System Interface for UniX. Much like TRON, POSIX is not a body of computer code that is compiled and run on some processor. Rather, it is a set of standards (IEEE 1003.1): interfaces, design guidelines, software design specifications, defining (for creating) the computer code that will become language interfaces between an OS kernel and its programs, to give compatibility when moving programs between compatible systems. POSIX is made mostly of features from BSD Unix and Unix System V. Much like Open Source software, all POSIX standards are copyrighted (by the Institute of Electrical and Electronics Engineers, Inc. Unix Operating Systems Software Computers.
Unix ( / ˈ j uː . n ɪ k s / ; trademarked as UNIX ) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, developed in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others. (wikipedia)
- Wikipedia: Unix is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, development starting in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.
- Unix Category
- Market share of operating systems - The usage share of operating systems is an estimate of the percentage of computing devices that run each operating system at any particular time. This also approximates to the market share of those operating systems.
- Operating systems timeline
- Plan 9 from Bell Labs - Plan 9 from Bell Labs is a distributed operating system, originating in the Computing Sciences Research Center at Bell Labs in the mid-1980s, and building on UNIX concepts first developed there in the late 1960s; until the Labs' final release at the start of 2015.
- Unix time - Unix time is a system for describing a point in time, defined as the number of seconds that have elapsed since 00:00:00 Coordinated Universal Time, Thursday, 1 January 1970, minus the number of leap seconds that have taken place since then.
- Year 2038 problem - The Year 2038 problem is an issue for computing and data storage situations in which time values are stored or calculated as a signed 32-bit integer, and this number is interpreted as the number of seconds since 00:00:00 UTC on 1 January 1970.
- Operating system families
- Time-sharing operating systems
- A UnixGeeks.org www
A growing repository of resources and information related to the Unix operating system. UnixGeeks.org. All content is maintained by the group of users, to which membership is free. UnixGeeks.org.
- Encyclopedic A/UX www
- General Apache on A/UX Performance Hints www
Apache on A/UX Performance Hints.
- Usenet Comp.Unix.Aix archive www
Usenet newsgroup archive, archive, searchable by author, subject, and keywords header lines. Comp.Unix.Aix archive.
- Archive Bull AIX Freeware www
Archive of freeware and shareware for AIX (R) 4. Bull AIX Freeware.
- Ask SysAdmin Talk www
Ask questions, Talk, answer and discuss the daily routines of system administration. SysAdmin Talk.
- News RootPrompt -- Nothing but Unix www
News and information for Unix Sysadmins RootPrompt -- Nothing but Unix.
- Description, GreasyDaemon.com: Your Guide to BSD Unix www
Description, Your Guide to BSD Unix, links and search engine to find information related to BSD Unix: FreeBSD, OpenBSD, NetBSD. GreasyDaemon.com: Your Guide to BSD Unix.
- BSD Slashdot: BSD www
BSD section of the popular Slashdot open source news and forum site. Slashdot: BSD.
- Growing BSD/OS www
- Specializing Intelligent Systems Services Inc. www
Specializing in multivendor UNIX and Oracle consulting, Systems Services Inc., clustering and high availability solutions. Intelligent Systems Services Inc..
- Opus OPUS Systems www
Opus Systems is the market leader in providing Unix-based systems for the embedded PC market. Systems. Its flagship product is the Turbo SPARCard 5 system for PCs, which provides a complete Sun Microsystems SPARCstation-compatible system in a PC form factor. Cupertino, CA. OPUS Systems.
- Statistics Internet Operating System Counter www
Statistics on Internet OS use, Operating System Counter, WWW, FTP, and News servers. Over 940,000 hosts checked in this 1999 survey. Internet Operating System Counter.
- The Convergence International www
The non-Wintel user group, International, supporting Acorn, Amiga, Apple, ARM, Be, NCs, PowerPC, Psion, Unix and other alternative operating systems. Services include a non-Wintel news summary. Convergence International.
- Alexa: Unix Operating Systems
Alexa Directory Top Sites: Unix Operating Systems
- DMOZ: Unix Operating Systems
dmoz.org Directory: Unix Operating Systems