tokenpocketpei下载|xenix

作者: tokenpocketpei下载
2024-03-13 20:43:04

Xenix操作系统_百度百科

x操作系统_百度百科 网页新闻贴吧知道网盘图片视频地图文库资讯采购百科百度首页登录注册进入词条全站搜索帮助首页秒懂百科特色百科知识专题加入百科百科团队权威合作下载百科APP个人中心收藏查看我的收藏0有用+10Xenix操作系统播报讨论上传视频微软开发的系统本词条由“科普中国”科学百科词条编写与应用工作项目 审核 。XENIX操作系统是在IBMPC机及其兼容机上使用的多用户、多任务的分时操作系统,它使一台主机可供多个用户同时使用,并可同时运行多道程序。XENIX操作系统的组成不同于DOS,它由内外两层组成。中文名Xenix操作系统外文名Xenix Operating System基    于Unix系统开发公司微软特    点多用户、多任务的分时操作系统学    科计算机技术目录1发展2组成3启动方式4关闭方式5功能发展播报编辑XENIX是在UNIX的基础上改进的,是1980年8月Microsoft公司推出的。1984年在PC/AT机上运行的是XENIX1.0版,1985年又推出了XENIX2.0版。首先,Microsoft把原适合于小型机的UNIX加以修改,使之适用于Intel芯片作CPU16位微机。其次,它改进了代码,消除了缺陷,以获得更小更快的操作系统。另外,还提供了硬件错误恢复策略,以及文件系统瘫痪、电源故障和其它错误后的自动修复功能。增加了一些新的功能,包括记录封锁、共享数据段,以及改善了交互进程通信等。此外,它还增加了许多语言编译程序、数据库管理系统、通信与网络系统以及其它应用软件。因此,XENIX不仅形成为高效率的开发环境,而且也形成一个完整的应用系统。从1982年开始,SCO(Santa Cruz Operation)公司与Microsoft合作开发XENIX。由于Microsoft集中力量开发Windows、OS/2等,致使SCO成为XENIX的主要供应商和改进者。1988年SCO宣布了与UNIXSystem V/3863.1版目标码级兼容的SCOXENIX System V/3862.3.1版以及2.3.2版,它们可以直接运行UNIX应用程序的目标代码,不必重新编译。总之,XENIX以其精炼、灵活、高效、功能强和软件丰富等特点吸引着众多的用户,在1988年的《SCOXENIX产品目录》中就有2000多个软硬件产品,而且其数量仍在迅速地增长。 [1]组成播报编辑XENIX操作系统的由内外两层组成示。内层包含有文件管理程序、输入/输出设备管理程序、进程管理程序、存贮器管理程序等,主要功能是调度作业和管理数据的存贮。具有树型结构的文件分级管理系统,文件和目录的建立、存取、移动、处理等操作简单统一,随时可创建、安装、拆卸文件系统,并具有灵活的目录和文件保护机制,对每个文件和目录拥有者有可读、可写、可执行的各种组合。外层包含有各种高级语言处理程序及其他实用程序,它支持各种程序设计语言如C语言、BASIC、COBOL、FORTRAN、PASCAL、80286汇编语言等,具有各类软件开发工具和数据库管理系统、网络通信软件等。 [2]启动方式播报编辑XENIX操作系统运行时需要配置至少512KB的内存和至少10MB的硬盘空间,另需配备一个双面高密度软盘驱动器以及若干个串、并行接口和XENIX系统盘片。XENIX操作系统的启动不同于DOS启动方式,它需要经过三个步骤:加载操作系统、清理文件系统、选择系统操作方式。1.加载操作系统打开计算机电源,加载XENIX引导信息。此时按回车键,引导程序加载XENIX操作系统,加载结束后系统显示自身信息并检查根文件系统是否正常且已被清理,若已被清理则可直接进入第三步,否则进入第二步清理文件系统。2.清理文件系统若根文件系统未被清理,说明系统在此之前没有正常终止,此时需清理文件系统。在屏幕上出现下列显示信息:proceed with clearing(Y/N)?此时选择“Y”,系统便自动清理文件系统,对已被破坏的文件将其修复或删除无法修复的文件,清理完毕便进入第三步。3.选择系统操作方式XENIX操作系统提供两种系统操作方式:一种是普通操作方式(Normal Operation),另一种是系统维护方式(System Maintenance)。当屏幕提示如下信息时:Type Control-d to continue with normal Start up,or give the root passward for system maintenance:此时若选择Control-d(即同时按下ctrl键和d键),系统便进入普通操作方式,此刻,系统会出现“Login”字样,提示用户已进入多用户操作方式。这时用户需键入多用户登录名并按回车,然后键入登录口令,正确后屏幕上出现“$”提示符,表明登录成功。任何时候要注销此次登录,只要在$后键入Ctrl-d则可注销,系统便重新出现登录请求。若选择系统维护方式则需键入超级用户口令,正确后方能进入系统维护方式,此时系统会出现“#”提示符,表明用户进入超级用户(系统维护)操作方式。在“Login”普通操作方式下也可以通过键入root回车并键入超级用户口令而进入系统维护方式,在任何时候都可以通过键入ctrl-d键退出系统维护方式。 [2]关闭方式播报编辑XENIX操作系统的关闭方式也同DOS有所不同,主要有两种关闭系统的方式:一种是用shutdown命令,另一种是用haltsys命令关闭系统。1.shutdown命令方式在普通操作方式下通常用shutdown命令关闭系统,此命令在关闭系统之前,会发出提示信息,并提供几分钟时间使用户做好结束工作。只要在系统提示符下(如是系统维护方式则提示符为“#”)键入shutdown回车,则系统出现信息:Minutes till shutdown?(0-15):此时键入0~15内任一数字并回车,表明提供给用户结束工作的时间,系统便会在每个终端上出现提示信息,要求每个已登录的用户在规定的时间内结束现行工作,退出系统。一旦所有用户均已退出系统或限定时间已到,系统便关闭并显示信息:* *Normal system shutdown* ** *Safe to power off* *or* *Press Any key to Reboot* *此时便可以关闭电源或按任意键重新启动系统。2.haltsys命令方式该命令常用于系统中无其他用户或系统处于维护方式时的立即暂停系统运行。只要在系统提示符下作为超级用户登录至出现“#”提示符,然后键入haltsys回车,系统出现下列提示信息:* *Normal system shutdown* ** *Safe to power off* *or* *Press Any key to Reboot* *此时便可关闭电源或按任意键重新启动系统。 [2]功能播报编辑XENIX操作系统提供了丰富的文件管理、目录管理、状态查询、信息处理、信息维护、信息后援、通信等诸多功能。1.文件管理功能XENIX操作系统提供了一系列文件管理的命令,它们是:cat:连接并显示文件。more:一次一屏的显示文件。head:显示从文件头开始的几行。tail:显示一个文件尾。cmp:比较两个文件。cp:复制文件。copy:目录复制。pr:分页打印文件。1pr:送一个文件到打印机缓冲区排队。chmod:改变一个或多个文件(或目录)的存取方式。chown:改变一个或多个文件的所有者。chgrp:改变一个或多个文件的小组成员。mv:移动或重新命令文件和目录。ln:为一个文件建立别名。rm:删除文件。find:查找文件。2.目录管理功能XENIX操作系统为用户提供了四个目录管理的命令,它们是:mkdir:建立一个目录,rmdir:删除一个空目录。cd:改变工作目录。pwd:显示工作目录名字。3.状态查询功能XENIX操作系统为用户提供了丰富的状态查询命令,它们是:1s:列出目录的内容。1c:以列格式列出目录内容。file:确定文件类型。date:打印、显示、设置当前的时间。asktime:提示当时的时间。df:报告盘的空闲块。du:统计磁盘的用法。quot:概述文件系统所有权。who:列出使用系统的用户名。whodo:确定哪个用户在干什么。ps:报告进程状态。tty:显示终端的特殊文件名。4.信息处理功能XENIX操作系统为用户提供了四个信息处理命令,它们是:sort:排序和归并文件。wc:统计行数、单词数和字符数。grep:按模式查询文件。diff:比较两个正文文件。5.系统维护功能XENIX操作系统为用户提供了较多的系统维护命令,它们是:format:格式化软盘。mkfs:构造文件系统。mount:安装一个文件结构。umount:卸下一个文件系统。fdisk:建立硬盘分区。su:设变用户名为超级用户或另一用户。passwd:改变登录口令。mkusr:增加一个用户。rmusr:从系统里删除一个用户。haltsys:停止文件系统且退出系统。shut down:终止当前所有运行的进程。6.信息后援功能XENIX操作系统为用户提供了几个主要的信息后援命令,它们是:dd:转换和拷贝文件。tar:文件存档。sysadmin:执行文件后援并恢复文件。7.信息通信功能XENIX操作系统还为用户提供了一些通信命令,它们是:mail:发送、读取及处理邮件信息。write:向其他用户写信息。wall:写给所有用户。mesg:接收或拒绝传送给终端的信息。8.其他辅助功能,如:dos:存取DOS文件。od:用八进制显示文件。stty:设置终端选择项。cal:显示日历。banner:打印大的字符。kill:终止一个进程。XENIX操作系统能提供200多条命令,且命令选择项很多,因此使得XENIX操作系统功能灵活多样。 [2]新手上路成长任务编辑入门编辑规则本人编辑我有疑问内容质疑在线客服官方贴吧意见反馈投诉建议举报不良信息未通过词条申诉投诉侵权信息封禁查询与解封©2024 Baidu 使用百度前必读 | 百科协议 | 隐私政策 | 百度百科合作平台 | 京ICP证030173号 京公网安备110000020000

微软有哪些被市场遗忘或烂尾的项目? - 知乎

微软有哪些被市场遗忘或烂尾的项目? - 知乎首页知乎知学堂发现等你来答​切换模式登录/注册微软(Microsoft)Microsoft Windows微软有哪些被市场遗忘或烂尾的项目?在不触及商业利益的前提下,欢迎各位大佬前辈介绍一下。微软有哪些被市场遗忘,不受市场欢迎的产品/计划?显示全部 ​关注者576被浏览607,732关注问题​写回答​邀请回答​好问题 4​2 条评论​分享​84 个回答默认排序蓬岸 Dr.Quest电脑博物馆 www.compumuseum.com 站长​ 关注MSN Direct我觉得最有趣的,被微软放弃的项目是SPOT(Smart Personal Objects Technology - 智能个人物体技术),作为一项物联网技术,它使用普通收音机的FM频道的副载波传递数据信号,被称作DirectBand,微软和美国及加拿大许多地方的广播电台合作,提供名为MSN Direct的数据广播(datacast)服务,类似90年代中国许多传呼台的新闻服务,它提供交通路况、天气信息、实时油价等信息以及个人邮件及日程提醒,以及MSN Messenger消息转发。而最为有趣的是,MSN Direct的终端包括若干款智能手表相比同时代使用Palm OS和触摸屏的智能手表不到一天的续航时间(我亲自用过Fossil Wrist PDA),MSN Direct手表的续航时间可以达到4~5天,接近于后来Pebble的续航时间,而最重要的是,它们不需要依赖智能手机就可以独立运作。即使是十多年后的Apple Watch Series 3以内置手机模块的方式解决了依赖手机的问题,但电量也只能维持18小时。有些回复提到Apple Watch 3的续航时间比18个小时更长,这跟使用的频度有关,纯待机或低频使用的时候Apple Watch确实可以使用更长时间,18个小时的数据来自苹果官方文档:Apple Watch - 电池 - Apple (中国)实际上,我觉得利用FM频道的数据广播仍有其现实意义,特别是在那些基础设施不发达的发展中国家,相比频率较高的手机信号,频率较低的FM信号可以以较低的成本提供基础的数据通信服务(即使是单项的、订阅式的),或作为一项公众服务免费向公众提供数据信息。Xenix另一个非常有趣的事情则是微软的Xenix,曾经是PC上最流行的Unix系统,在中国,90年代Xenix是银行等商业应用场合最流行的操作系统。Xenix提供了在PC上双启动Unix和DOS的方法,这一机制后来被诸多移植到PC上的Linux和BSD所使用,另外Xenix提供了Alt+Fn键切换虚拟终端的快捷键,也被后来的Linux所继承Why do Linux systems have multiple virtual consoles?在Windows NT出现之前,Xenix一直是微软主推的网络服务器操作系统,而在微软内部,使用Xenix的邮件服务器一直被使用到90年代中期,才被微软自己开发的Exchange Server所取代。Microsoft Photosynth微软的Photosynth是一项全景照片合成服务,它可以将若干张照片合并成全景照片,它也是Windows 8.1内置的全景拍照应用,但是当我最近在整理我的硬盘时,发现我在Windows 8.1上拍摄的全景照片在Windows 10上已经无法打开了。幸运的是,我在Photosynth关闭的博客上找到了Photosynth Offline Viewer更重要的是,Photosynth在Github上开源了,这让爱好者们可以继续查看其代码,并在自己的电脑上搭建自己的3D全景查看网站。Github:Photosynth编辑于 2018-04-11 12:28​赞同 229​​18 条评论​分享​收藏​喜欢收起​Tim Chen​编程等 2 个话题下的优秀答主​ 关注WinFS估计是史上最大烂尾项目了,在Vista时期试图用数据库来做OS的文件存储。想法太超前了。https://en.m.wikipedia.org/wiki/WinFS发布于 2018-04-10 09:33​赞同 101​​22 条评论​分享​收藏​喜欢

Xenix 操作系统的简史-CSDN博客

>

Xenix 操作系统的简史-CSDN博客

Xenix 操作系统的简史

最新推荐文章于 2021-09-09 16:15:35 发布

liaowenxiong

最新推荐文章于 2021-09-09 16:15:35 发布

阅读量1.7k

收藏

2

点赞数

1

原文链接:https://www.knowpia.cn/pages/Xenix#cite_note-6

版权

简介

Xenix 是一种UNIX操作系统,可在个人电脑及微型计算机上使用。该系统由微软公司在1979年从美国电话电报公司获得授权,为Intel处理器所开发。后来,圣克鲁兹作业公司(SCO)收购了其独家使用权,自那以后,该公司开始以SCO UNIX(亦被称作SCO OpenServer)为名发售。值得一提的是,它还能在DEC PDP-11或是Apple Lisa电脑运行。它继承了UNIX的特性,Xenix具备了多人多任务的工作环境,符合UNIX System V的接口规格 (SVID)。

历史

Xenix是微软为微型计算机推出的Unix版本。由于微软购买的授权无法直接让该操作系统以“UNIX”为名,便将之命名为Xenix。

微软在1979年从美国电话电报公司购买了Unix授权,并于1980年8月25日发布面向16位系统的版本,由SCO公司将该系统移植至英特尔8086/8088架构。

自第七版后,Xenix 使用了 BSD 的技术,再加上当时x86处理器的价格低廉,很快便成为当时最受欢迎的Unix发行版。

微软并不直接把Xenix销售给终端客户,而是以OEM的形式授权给英特尔、Tandy、Altos及SCO公司。最初的版本面向PDP-11,后来移植至Zilog Z8001(英语:Zilog Z8000)处理器。Altos在1982年早期推出了适用于其英特尔8086结构电脑的版本,Tandy公司在1983年3月推出了基于摩托罗拉68000架构的TRS-XENIX,SCO公司也在1983年9月推出了基于IBM PC的对应移植版。在这之后也出现了基于摩托罗拉68000架构的Apple Lisa移植版;此时,Xenix已经基于美国电话电报公司的UNIX System III。

2.0版的Xenix基于UNIX System V,于1985年释出。2.1.1版开始支持Intel 80286 CPU。此后的更新改善了其稳定性。

1987年,SCO公司将其移植至32位的Intel 80386CPU,2.3.1版正式支持i386,小型计算机系统接口和TCP/IP协议。SCO的Xenix System V/386是市面上首款支持英特尔x86架构系统的32位系统。

当微软和IBM达成开发OS/2操作系统的协议后,便失去了推广Xenix的兴趣。1987年,微软与SCO达成了一项协议,前者以持有后者股票25%的条件转让了Xenix的所有权。在失去对OS/2的兴趣后,微软最终转向Windows NT。但在微软内部依旧在使用Xenix,其1987年为支持新功能的补丁扩散到了Xenix及SCO UNIX。据说截止至1992年,微软还在使用基于Xenix的Sun的工作站及VAX微型计算机。[7]

二十世纪八十年代末期,《The Design and Implementation of the 4.3BSD UNIX Operating System》称Xenix为“可能是传播最广的UNIX操作系统”(Probably the most widespread version of the UNIX operating system)。[8]

SCO最初推出了高端的SCO UNIX,同时保留了Xenix。与此同时,Sun和美国电话电报公司把Xenix、BSD、SunOS和System V合并成System V Release 4。SCO UNIX虽然基于System V Release 3,但也拥有Release 4的大部分功能。Xenix的最终版停留在2.3.4。

备注: SCO 是Santa Cruz Operation的简称。SCO公司是世界领先的基于Intel处理器PC计算机的Unix系统和Windows/Unix集成产品供应商。公司成立于1979年,1993年成为股票上市公司。据IDC统计数字表明,SCO占有全球40% 的UNIX市场。

优惠劵

liaowenxiong

关注

关注

1

点赞

2

收藏

觉得还不错?

一键收藏

知道了

1

评论

Xenix 操作系统的简史

简介Xenix 是一种UNIX操作系统,可在个人电脑及微型计算机上使用。该系统由微软公司在1979年从美国电话电报公司获得授权,为Intel处理器所开发。后来,圣克鲁兹作业公司(SCO)收购了其独家使用权,自那以后,该公司开始以SCO UNIX(亦被称作SCO OpenServer)为名发售。值得一提的是,它还能在DEC PDP-11或是Apple Lisa电脑运行。它继承了UNIX的特性,Xenix具备了多人多任务的工作环境,符合UNIX System V的接口规格 (SVID)。历史Xenix是微

复制链接

扫一扫

reenix:Weenix 操作系统的 Rust 版本

06-09

雷尼克斯

这是用编写的类 Unix 操作系统的开始。 它基于为编写的操作系统。 目前它支持一个基本的内核 shell、多个带有 waitpid 的进程和写入磁盘。 这是我的。 (即将发布)。

建造

这仅在 Debian 7.8 上测试。

构建要求:

GCC(我使用 4.9.0)

Rust(外部/rust 版本应该可以工作)

奇木

Python

制作

grub-mkrescue

索里索

构建命令:

制作

跑步

./威尼克斯

去做

清理无数的锋利边缘。

使 VFS 工作

开始制作 S5FS

获取用户空间

微软把我们都骗了,它最爱Unix,不是Windows.....

最新发布

码农翻身

06-19

542

1很多人都不知道,在上世纪70年代,Unix才是微软的战略产品。1973年,AT&T对外发布了Unix这个强大、灵活、多用户、多任务的操作系统,Unix在学术界和企业中迅速流行,被广泛应用于小型机和工作站。而微软,只是一家刚创业不久的小软件公司,靠开发和销售在微机上运行BASIC解释器为生,并不具备开发操作系统的能力。但是比尔·盖茨认定个人电脑是未来,一定要占据操作系统的市场,于是,微软从...

1 条评论

您还未登录,请先

登录

后发表或查看评论

Xenix — 微软与UNIX的短暂爱恋

liaowenxiong的博客

05-13

522

微软向外宣布Microsoft Xenix OS,一个为16位微处理器开发的可移植的操作系统。它是一个交互的,多用户多任务系统,可以运行在Intel 8086, Zilog Z8000, Motorola M68000以及DEC公司的PDP-11系统计算机上。所有微软已经开发的系统软件(Cobol,Pascal,Basic,和DBMS)都会被移植到Xenix系统上,并且所有为UNIX开发的软件都将兼容于Xenix。

 

—— 以上摘自Microsoft Press Release,1980年

.

Unix风雨五十年:老兵远去,新秀崛起

CSDN业界要闻

06-03

3608

戳蓝字“CSDN云计算”关注我们哦!文|姜洪军Unix?这是多老的一个传说啊!年轻一代的很多人似乎都没听说过。不过,微软的Windows NT、开源的Linux、谷歌...

Xenix杂谈

#include

08-02

829

看APUE的时候,偶然看到Xenix这个由微软

从Mac/OS和iOS开放源码浅谈UNIX家谱

架构师技术联盟

10-08

5759

苹果公司在各类开源项目中长期贡献着自己的力量,但其UNIX系统技术一直都属于闭源阵营(这一点可以从NUX OS阵营和家谱图中得到答案)。然而,以封闭闻名的苹果公司,2017年国庆期间在GitHub上公布了旗舰操作系统的XNU内核源代码,XNU(XNU is Not Unix的缩写)属于 MacOS(包括以往全部版本)以及 iOS 所使用的类Unix内核(对应各类苹果Darwin操作系统)。通过公开

x86上的那些UNIX——System V篇(Solaris、SCO)

fryer

04-09

7430

上篇BSD篇讲述了开源世界的UNIX,今天我们进入商业UNIX世界——System V的后裔,商业UNIX大都通过了UNIX认证,而且大多并不使用FreeBSD等使用的自由软件桌面

2.Solaris篇

      《UNIX环境高级编程》的第二版曾说Solaris是目前(10年前……)唯一有一定市场份额的System V后裔,这个说法现在已经不太适用了,经过21世纪初市值冲到2000亿美

sco unix系统_什么是SCO UNIX

culin0274的博客

08-07

1289

sco unix系统 什么是SCO UNIX? (What Is SCO UNIX?)

SCO UNIX was a variant of the UNIX operating system for IBM-compatible computers developed by Santa Cruz Operation (SCO). SCO Unix is Unix-based AT & T ...

UNIX 系统的下载地址

tanzugan的专栏

07-07

2915

各种 UNIX 下载地址 MandrakeLinux9.2 for AMD64 http://www.pumcpc.com/cram/linux ... .2rc1-CD1.amd64.iso http://www.pumcpc.com/cram/linux ... .2rc1-

UNIX 是什么?怎么诞生的?

weixin_30569001的博客

12-25

388

要记住,

当一扇门在你面前关闭的时候,

另一扇门就会打开。

肯·汤普森(Ken Thompson) 和丹尼斯·里奇(Dennis Richie)两个人就是这句名言很好的实例。他们俩是20世纪最优秀的信息技术专家之二,因为他们创造了最具影响力和创新性的软件之一: UNIX。

UNIX 系统诞生于贝尔实验室

UNIX最开始的名字是 UNICS(UNiplexed Information ...

自己写操作系统学习总结

热门推荐

bcbobo21cn的专栏

05-04

1万+

怎样自己写一个简单的操作系统?

https://www.zhihu.com/question/20207347

我写的时候一些经历:

第一次写的时候3000行左右的就无法调试了,当时主要参考了linux 0.11(基础太潜)。

第二次写的时候,基本定下几个核心模块, 启动/内存管理/进程管理/用户环境/磁盘驱动/块缓冲/文件系统/中断,然后就开始发重新明轮子(不参考其他OS代码),

《UNIX操作系统》学习笔记

Orangeoooooo的专栏

04-25

8694

unix操作系统概述

概述:UNIX操作系统是一款非常流行的多任务、多用户操作系统。

特点:1、多任务——区别DOS(单任务)

           2、多用户——  区别DOS(单用户)

           3、并行处理能力——允许多个处理器协调运行

UNIX流派:

UNIX产品

计算机

生产厂家

SCOUNIX

PC兼容机

SCO公司

操作系统的发展过程

学习日常分享

09-09

6140

推动操作系统发展的主要动力

⑴ 不断提高计算机资源利用率的需要。

⑵ 方便用户.

⑶ 器件的不断更新换代。

⑷ 计算机体系结构的不断发展

推动操作系统发展的主要动力

⑴ 不断提高计算机资源利用率的需要。

⑵ 方便用户。

⑶ 器件的不断更新换代。

⑷ 计算机体系结构的不断发展

㈠无操作系统的计算机系统

人工操作方式

从第一台计算机诞生(1945年) 到 50 年代中期的计算机,属于第一代 , 那时还未出现操作系统。

ENIAC计算机(美国宾夕法尼亚大学)

运算速度: 5000次/每秒

真空管: 18000个

Unix / Linux 文件系统

尼克的博客

08-19

2177

作为一名电脑使用者,不懂图形化操作文件系统就不算会使用电脑。那么作为一名程序员,如果不懂命令行操作 Linux 文件系统,就不敢说自己是一名合格的程序员。我们工作中使用 Unix / Linux 作为应用程序服务器,无非就是把我们编写好的软件部署到远程服务器,其中少不了对文件的各种操作,如果你不会操作文件那么将寸步难行。接下来我们来认识一下 Unix / Linux 文件系统。

1. 本地文件系...

电脑的操作系统是干什么的,Linux 是什么,Windows又是什么

Hello_world1998_的博客

09-01

642

Hello world

提示:文章写完后,目录可以自动生成,如何生成可参考右边的帮助文档

文章目录Hello world前言一、pandas是什么?二、使用步骤1.引入库2.读入数据总结新的改变功能快捷键合理的创建标题,有助于目录的生成如何改变文本的样式插入链接与图片如何插入一段漂亮的代码片生成一个适合你的列表创建一个表格设定内容居中、居左、居右SmartyPants创建一个自定义列表如何创建一个注脚注释也是必不可少的KaTeX数学公式新的甘特图功能,丰富你的文章UML 图表FLowchart流程图导出与

UNIX的大全

apollon521的专栏

05-30

4622

转帖]快来看呀---------》unix大杂烩,你要的基本上都有呀!!http://www.chinaunix.net 作者:mzd73  发表于:2002-11-01 21:11:57【发表回复】【查看论坛原帖】【添加到收藏夹】【关闭】 在有SCO UNIX光碟时,制作的方法:1.Format a 3.5 inch high density diskette using the format(

“相关推荐”对你有帮助么?

非常没帮助

没帮助

一般

有帮助

非常有帮助

提交

liaowenxiong

CSDN认证博客专家

CSDN认证企业博客

码龄4年

暂无认证

1088

原创

859

周排名

1万+

总排名

317万+

访问

等级

1万+

积分

8万+

粉丝

1391

获赞

188

评论

6544

收藏

私信

关注

热门文章

MySQL数据库的数据类型decimal详解

66099

命令(CMD)终端的清屏(清除/清空)命令/快捷键

57558

查询英文缩写形式(缩写词)的网站工具梳理

52458

macOS下配置环境变量/查看环境变量

47305

MacBook 如何强制删除『无法正常卸载』的应用程序

43788

分类专栏

数据库

28篇

产品设计

12篇

Maven

1篇

Hibernate

7篇

VIM/VI

16篇

文件上传/下载

3篇

Axure RP

Mac

24篇

各种规范

7篇

IntelliJ IDEA for Mac

22篇

最新评论

HH SaaS电商系统的拼团/团购/拼单系统设计

锋少侠:

这个有付费源码么

CentOS Linux 下的 vim 无法使用系统剪贴板,怎么解决呢?

IT社区一哥们:

安装完还是减号,咋办?

如何彻底禁用Chrome浏览器的缓存功能

想要和得到,还需要做到:

这样不是所有缓存都没了,开发的话可以

命令(CMD)终端的清屏(清除/清空)命令/快捷键

MrCkbfly:

cmd的清屏命令是CLS

MySQL数据库创建用户root@%

weixin_52353688:

是不是要开启远程服务啊

最新文章

什么是回归测试

系统集成测试(SIT)/系统测试(ST)/用户验收测试(UAT)/冒烟测试

MacBook Pro Apple M2 Max安装MySQL-8.0.33

2023年7篇

2022年198篇

2021年757篇

2020年165篇

目录

目录

分类专栏

数据库

28篇

产品设计

12篇

Maven

1篇

Hibernate

7篇

VIM/VI

16篇

文件上传/下载

3篇

Axure RP

Mac

24篇

各种规范

7篇

IntelliJ IDEA for Mac

22篇

目录

评论 1

被折叠的  条评论

为什么被折叠?

到【灌水乐园】发言

查看更多评论

添加红包

祝福语

请填写红包祝福语或标题

红包数量

红包个数最小为10个

红包总金额

红包金额最低5元

余额支付

当前余额3.43元

前往充值 >

需支付:10.00元

取消

确定

下一步

知道了

成就一亿技术人!

领取后你会自动成为博主和红包主的粉丝

规则

hope_wisdom 发出的红包

实付元

使用余额支付

点击重新获取

扫码支付

钱包余额

0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。 2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值

Xenix – ArchiveOS

Xenix – ArchiveOS

Skip to content

  

Menu

Home

About

Linux A-D

Linux E-J

Linux K-P

Linux Q-Z

BSD

DOS

Solaris

Others

News

Press

Sponsoring

Donate

Contact

Xenix

July 26, 2023October 23, 2018 by pavroo

Last Updated on: 26th July 2023, 12:51 pm Web site: (not active)

Origin: USA

Category: Server

Desktop environment: CLI

Architecture: x86, PC/XT, PDP-11, Z8001, 68k

Based on: UNIX

Wikipedia: Xenix

Media: Install

The last version | Released: 3.2.4.2 | 1992

Xenix/SCO UNIX System V – a source closed, UNIX family operating system published in 1980 by Microsoft, then later sold to Santa Cruz Operation (SCO).

Microsoft(R) XENIX(R) System V/386 was the first release of Microsoft’s implementation of the UNIX(R) System V Operating System for the Intel(R) 80386 microprocessor.

XENIX is a multi-user solution that allows multiple users to be attached via inexpensive terminals to a single machine, thereby allowing the users to share the resources of the machine. It is also compatible with the UNIX System V Operating System – an operating system that is highly portable, and is to be found on a wide variety of architectures: large mainframes, minicomputers, technical and scientific workstations, and personal computers.

Starting in 1981, Microsoft has marketed its adaptation of the UNIX Operating System under the name XENIX. Microsoft’s goal was to provide high quality implementations of UNIX for computer systems based upon microprocessors. In doing so, Microsoft has become one of the major licensees of the UNIX Operating System, accounting for the majority of implementations sold upon microprocessor-based systems. In particular, a large application base has been built around Microsoft XENIX System V/286 for systems based upon the Intel 80286 microprocessor. Microsoft XENIX System V/386 for the Intel 80386 will preserve this application base, while opening up the full potential of the 80386 to developers and users.

Supported platforms were: PC/XT, x86, PDP-11, Z8001, 68k.

Download Xenix

Click to rate this post!

[Total: 0 Average: 0]

Facebook

Twitter

Reddit

Tumblr

Categories Others Tags 1992, cli, download, install, server, unix, usa, x86

Linux For ClinicsItalian GRASS

1 thought on “Xenix”

Tom

June 15, 2019 at 4:33 pm

N1 image is missing. The m1 is not mislabeled either.

Reply

Leave a Comment Cancel replyCommentName

Email

Website

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

SearchWe can exist thanks to your support, soconsider a monthly support, please! We work for You full time! Will you help us to survive a next month?

Donations:March 2024

Target (min.): €987

40%

Donated: 40%

Missing: 60%

Thank You for Your support!

TOP PopularArchives Archives

Select Month

March 2024

February 2024

January 2024

December 2023

November 2023

October 2023

September 2023

August 2023

July 2023

June 2023

May 2023

April 2023

March 2023

February 2023

January 2023

December 2022

November 2022

October 2022

September 2022

August 2022

July 2022

June 2022

May 2022

April 2022

March 2022

February 2022

January 2022

December 2021

November 2021

October 2021

September 2021

August 2021

July 2021

June 2021

May 2021

April 2021

March 2021

February 2021

January 2021

December 2020

November 2020

October 2020

September 2020

August 2020

July 2020

June 2020

May 2020

April 2020

March 2020

February 2020

January 2020

December 2019

November 2019

October 2019

September 2019

August 2019

July 2019

June 2019

May 2019

April 2019

March 2019

February 2019

January 2019

December 2018

November 2018

October 2018

September 2018

August 2018

July 2018

June 2018

May 2018

April 2018

March 2018

February 2018

January 2018

December 2017

November 2017

October 2017

September 2017

August 2017

July 2017

June 2017

May 2017

April 2017

March 2017

February 2017

January 2017

December 2016

November 2016

October 2016

September 2016

August 2016

July 2016

June 2016

May 2016

April 2016

March 2016

February 2016

January 2016

December 2015

November 2015

October 2015

September 2015

August 2015

July 2015

Recent Commentspfr on Solarisokaypj on CyberOS LinuxpivotCE on LuneOSbsd on PC-BSDAndy on EOS

SparkyLinuxLinuxiarzeSparky news 2024/021 March 2024Noi & Imaginer24 February 2024KaOS 2024.0312 March 2024Robotyzacja procesów biznesowych – kto powinien się nią zainteresować?11 March 2024

ArchiveAppArchiveGameDropbox Paper12 March 2024Reedline9 March 2024Lord of the Rings13 March 2024Fillets11 March 2024

Term of use

Privacy and cookies policy

Our services:  LinuxChannel.org  Linuxiarze.pl  LinuxForBusiness  LinuxiarzeWebDir  SparkyLinux  ArchiveApp  ArchiveGame

© 2024 ArchiveOS

操作系统: Unix操作系统演进简史 - 知乎

操作系统: Unix操作系统演进简史 - 知乎切换模式写文章登录/注册操作系统: Unix操作系统演进简史启迪云来这里省心管云、安心用云 众所周知,UNIX操作系统是一个强大的多用户,多任务操作系统,支持多种处理器架构,起源于贝尔实验室、通用电气和麻省理工学院合作的计划MULTICS操作系统计划,由Ken Thompson、Dennis Ritchie和Douglas McIlroy于1969年在AT&T的贝尔实验室开发。当时被称为" Niplexed Information and Computing Service" 缩写为"UNICS",后来就将其称其为"UNIX"了。 目前它的商标权由国际开放标准组织所拥有,只有符合单一UNIX规范的UNIX系统才能使用UNIX这个名称,否则只能称为类UNIX,其中苹果XNU就是类UNIX系统。 Unix在开发的过程中没有对应任何的奖励制度和管理体制,Unix发展的动力主要源自科研和兴趣。直到现在,Unix的发展历史和家谱体系可以总结为下图(图片来源网络,点击看大图)。 然而在20世纪70年代,AT&T公司开始注意到Unix所带来的商业价值并开始寻找一些手段来保护Unix,包括通过许可证方式教学使用Unix的源码。在20世纪80年代,Unix发展为有两个最主要的版本线,Berkeley的BSD UNIX和AT&T的Unix。后来Unix的发展越来越快,这主要归根于不断地出现各种各样的变种(类Unix)。 Sun Microsystems公司基于BSD UNIX开发的SunOS(即后来大家熟悉的Solaris)的工作站。AT&T发布的Unix System V的第一版最终也造就了IBM的AIX和HP的HP-UX。下面讨论下几个主流类UNIX系统。 Mac OS 苹果公司在各类开源项目中长期贡献着自己的力量,但其UNIX系统技术一直都属于闭源阵营(这一点可以从NUX OS阵营和家谱图中得到答案)。然而,2017年国庆期间在GitHub上公布了旗舰操作系统的XNU内核源代码,XNU(XNU is Not Unix的缩写)属于 MacOS(包括以往全部版本)以及 iOS 所使用的类Unix内核(对应各类苹果Darwin操作系统)。 XNU源代码基于苹果公共源许可(Apple Public Source License 2.0),这其实是一项相当严格的许可 ; 开发人员可将此次发布的内核代码引入自有项目。Mac OS是基于Unix内核的图形化操作系统,2011年7月20日Mac OS X(X为10的罗马数字写法)已经正式被苹果改名为OS X。也是一套运行于苹果Macintosh系列电脑上的操作系统,后来也推出在PC上运行的Mac系统(简称 Mac PC)。AIX AIX是IBM开发的一套UNIX操作系统。它符合Open group的UNIX 98行业标准,通过全面集成对32位和64位应用的并行运行支持,为这些应用提供了全面的可扩展性。它可以在所有的IBM P系列和IBM RS/6000工作站、服务器和大型并行超级计算机上运行。另外,AIX级别的逻辑卷管理正逐渐被添加进各种自由的UNIX风格操作系统中。Solaris Solaris是SUN公司研制的类Unix操作系统。直至2013年,Solaris的最新版为 Solaris 11。早期的Solaris是由BSD Unix发展而来。但至今Solaris仍旧属于私有软件。2005年6月14日,Sun公司将正在开发中的Solaris 11的源代码以CDDL许可开放,这一开放版本就是OpenSolaris。 Sun的操作系统最初叫做SunOS。SunOS 5.0开始,SUN的操作系统开发开始转向System V4,并且有了新的名字叫做Solaris 2.0。Solaris 2.6以后,SUN删除了版本号中的"2",因此,SunOS 5.10就叫做Solaris 10。Solaris的早期版本后来又被重新命名为Solaris 1.x. 所以"SunOS"这个词被用做专指Solaris操作系统的内核,因此Solaris被认为是由SunOS,图形化的桌面计算环境,以及它网络增强部分组成。 Solaris运行在Intel x86及SPARC、Ultra SPARC两个平台。后者是升阳工作站使用的处理器。因此,Solaris在SPARC上拥有强大的处理能力,同时Intel x86上的性能也正在得到改善。对这两个平台,Solaris屏蔽了底层平台差异,为用户提供了尽可能一样的使用体验。HP UX HP UX取自Hewlett Packard UniX,是惠普公司以System V为基础所研发成的类UNIX操作系统。HP-UX可以在HP的PA-RISC处理器、Intel的Itanium处理器上运行,另外过去也能用于后期的阿波罗电脑(Apollo/Domain)系统上。较早版本的HP-UX也能用于HP 9000系列200型、300型、400型的电脑系统(使用Motorola的68000处理器)上,和HP-9000系列500型电脑(使用HP专属的FOCUS处理器架构)。IRIX IRIX是由硅谷图形公司(简称SGI,SGI被HPE收购)以System V与BSD延伸程序为基础所发展成的UNIX操作系统,IRIX可以在SGI公司的RISC型电脑上运行,即运行基于32位、64位MIPS架构的SGI工作站、服务器之上。Xenix Xenix是一种UNIX操作系统,可在个人电脑及微型计算机上使用。该系统由微软公司在1979年从美国电话电报公司获得授权,为Intel处理器所开发。后来,SCO公司收购了其独家使用权,自那以后,该公司开始以SCO UNIX (亦被称作SCO OpenServer)为名发售。它继承了UNIX的特性,Xenix具备了多人多任务的工作环境,符合UNIX System V的接口规格(SVID)。A/UX A/UX取自Apple Unix,是苹果电脑公司所开发的UNIX操作系统,此操作系统可以在该公司的Macintosh电脑上运行,A/UX于1988年首次发表,最终的3.1.1版本于1995年发表。A/UX至少需要一颗具有浮点运算单元及标签页式的存储器管理单元PMMU (Paged Memory Management Unit)的处理器才能运行。 A/UX是以System V 2.2版为基础所发展,同时使用System V3、System V4、BSD 4.2、BSD 4.3等的传统特色,它也遵循POSIX规范及SVID规范。Linux 从Unix操作系统的发展历史来看,又可以分为古典Unix,近代Unix和现代Unix,其中Linux起源于Minix,在严格意义上来讲不属于Unix范畴。智能终端系统除了苹果iOS外,Android、MeeGo和WebOS都属于Linux系统分支。 Linux有许多不同的版本,而且Linux的内核的发行和使用是完全免费的。所以很多的公司、组织,甚至是个人开发了他们自己Linux操作系统版本,包括终端设备操作系统Android。随着Linux成熟发展和开放,Linux也经常内嵌在许多硬件设备之中,例如路由器、交换机、电话系统、智能手机、GPS系统等。比较受欢迎的Linux发行版如Fedora、Ubuntu、Red Hat、Debian、SUSE等。发布于 2019-05-27 10:58UnixUnix 入门​赞同 21​​1 条评论​分享​喜欢​收藏​申请

WinWorld:大型的废弃操作系统、软件、游戏的博物馆 - 知乎

WinWorld:大型的废弃操作系统、软件、游戏的博物馆 - 知乎首发于Linux 爱好者切换模式写文章登录/注册WinWorld:大型的废弃操作系统、软件、游戏的博物馆Linux中国​已认证账号有一天,我正在测试 Dosbox – 这是一个在 Linux 平台上运行 MS-DOS 游戏与程序的软件。当我在搜索一些常用的软件,例如 Turbo C++ 时,我意外留意到了一个叫做 WinWorld 的网站。我查看了这个网站上的某些内容,并且着实被惊艳到了。WinWorld 收集了非常多经典的,但已经被它们的开发者所抛弃许久的操作系统、软件、应用、开发工具、游戏以及各式各样的工具。它是一个以保存和分享古老的、已经被废弃的或者预发布版本程序为目的的线上博物馆,由社区成员和志愿者运营。WinWorld 于 2013 年开始运营。它的创始者声称是被 Yahoo birefcases 激发了灵感并以此构建了这个网站。这个网站原目标是保存并且分享老旧软件。多年来,许多志愿者以不同方式提供了帮助,WinWorld 收集的老旧软件增长迅速。整个 WinWorld 仓库都是自由开源的,所有人都可以使用。WinWorld 保存了大量的废弃操作系统、软件、系统应用以及游戏就像我刚才说的那样, WinWorld 存储了大量的被抛弃并且不再被开发的软件。Linux 与 Unix:这里我给出了完整的 UNIX 和 LINUX 操作系统的列表,以及它们各自的简要介绍、首次发行的年代。A/UX - 于 1988 年推出,移植到苹果的 68k Macintosh 平台的 Unix 系统。AIX - 于 1986 年推出,IBM 移植的 Unix 系统。AT &T System V Unix - 于 1983 年推出,最早的商业版 Unix 之一。Banyan VINES - 于 1984 年推出,专为 Unix 设计的网络操作系统。Corel Linux - 于 1999 年推出,商业 Linux 发行版。DEC OSF-1 - 于 1991 年推出,由 DEC 公司开发的 Unix 版本。Digital UNIX - 由 DEC 于 1995 年推出,OSF-1 的重命名版本。FreeBSD 1.0 - 于 1993 年推出,FreeBSD 的首个发行版。这个系统是基于 4.3BSD 开发的。Gentus Linux - 由 ABIT 于 2000 年推出,未遵守 GPL 协议的 Linux 发行版。HP-UX - 于 1992 年推出,UNIX 的变种系统。IRIX - 由硅谷图形公司(SGI)于 1988 年推出的操作系统。Lindows - 于 2002 年推出,与 Corel Linux 类似的商业操作系统。Linux Kernel - 0.01 版本于 90 年代早期推出,Linux 源代码的副本。Mandrake Linux - 于 1999 年推出。基于 Red Hat Linux 的 Linux 发行版,稍后被重新命名为 Mandriva。NEWS-OS - 由 Sony 于 1989 年推出,BSD 的变种。NeXTStep - 由史蒂夫·乔布斯创立的 NeXT 公司于 1987 年推出,基于 Unix 的操作系统。PC/IX - 于 1984 年推出,为 IBM 个人电脑服务的基于 Unix 的操作系统。Red Hat Linux 5.0 - 由 Red Hat 推出,商业 Linux 发行版。Sun Solaris - 由 Sun Microsystem 于 1992 年推出,基于 Unix 的操作系统。SunOS - 由 Sun Microsystem 于 1982 年推出,衍生自 BSD 基于 Unix 的操作系统。Tru64 UNIX - 由 DEC 开发,旧称 OSF/1。Ubuntu 4.10 - 基于 Debian 的知名操作系统。这是早期的 beta 预发布版本,比第一个 Ubuntu 正式发行版更早推出。Ultrix - 由 DEC 开发, UNIX 克隆。UnixWare - 由 Novell 推出, UNIX 变种。Xandros Linux - 首个版本于 2003 年推出。基于 Corel Linux 的专有 Linux 发行版。Xenix - 最初由微软于 1984 推出,UNIX 变种操作系统。不仅仅是 Linux/Unix,你还能找到例如 DOS、Windows、Apple/Mac、OS 2、Novell netware 等其他的操作系统与 shell。DOS & CP/M:86-DOSConcurrent CPM-86 & Concurrent DOSCP/M 86 & CP/M-80DOS PlusDR-DOSGEMMP/MMS-DOS多任务的 MS-DOS 4.00多用户 DOSPC-DOSPC-MOSPTS-DOSReal/32Tandy DeskmateWendin DOSWindows:BackOffice ServerWindows 1.0/2.x/3.0/3.1/95/98/2000/ME/NT 3.X/NT 4.0Windows WhistlerWinFrameApple/Mac:Mac OS 7/8/9Mac OS XSystem Software (0-6)OS/2:Citrix MultiuserOS/2 1.xOS/2 2.0OS/2 3.xOS/2 Warp 4于此同时,WinWorld 也收集了大量的旧软件、系统应用、开发工具和游戏。你也可以一起看看它们。说实话,这个网站列出的绝大部分东西,我甚至都不知道它们存在过。其中列出的某些工具发布于我出生之前。如果您需要或者打算去测试一个经典的程序(例如游戏、软件、操作系统),并且在其他地方找不到它们,那么来 WinWorld 资源库看看,下载它们然后开始你的探险吧。祝您好运!WinWorld – A Collection Of Defunct OSs, Software, Applications And Games免责声明:OSTechNix 并非隶属于 WinWorld。我们 OSTechNix 并不确保 WinWorld 站点存储数据的真实性与可靠性。而且在你所在的地区,或许从第三方站点下载软件是违法行为。本篇文章作者和 OSTechNix 都不会承担任何责任,使用此服务意味着您将自行承担风险。(LCTT 译注:本站和译者亦同样申明。)本篇文章到此为止。希望这对您有用,更多的好文章即将发布,敬请期待!谢谢各位的阅读!via: https://www.ostechnix.com/winworld-a-large-collection-of-defunct-oss-software-and-games/作者:SK 选题:lujun9972 译者:thecyanbird 校对:wxy本文由 LCTT 原创编译,Linux中国 荣誉推出发布于 2018-10-07 11:20软件操作系统博物馆​赞同 84​​5 条评论​分享​喜欢​收藏​申请转载​文章被以下专栏收录Linux 爱好者学习 Linux

Days of XENIX » Linux Magazine

Days of XENIX » Linux Magazine

 

search:

News

Features

Blogs

White Papers

Archives

Special Editions

DigiSub

Shop

Administration

Desktop

Development

Hardware

Security

Server

Programming

Operating Systems

Software

Networking

Apple

Chrome

GNU

Linux

Mac

Qubes OS

Red Hat

Secure

Subgraph

Ubuntu

Unix

Windows

Home

 » 

Issues

 » 

2021

 » 

246

 » 

Remembering XENIX

Login

Exploring Microsoft's forgotten Unix distribution

It might seem surprising today, but before Linux arrived on the scene, Microsoft was a leading player in the Unix world. We look at XENIX, Microsoft's lost Unix distro, and show how you can boot up XENIX in a virtual machine.

Days of XENIX

Article from Issue 246/2021

Author(s): John Knight

It might seem surprising today, but before Linux arrived on the scene, Microsoft was a leading player in the Unix world. We look at XENIX, Microsoft's lost Unix distro, and show how you can boot up XENIX in a virtual machine.

As strange as it may seem, there was a period when Microsoft was advertising Unix as being "the microcomputer operating system of the future," and the company was even a big player in the Unix business.Home computing at the time was dominated by 8-bit microcomputers, and Microsoft was planning for the next stage of computing, providing the OS for 16-bit microprocessors. After analyzing all available choices, Microsoft was expecting Unix to be the operating system of choice once home computing became sufficiently powerful.Development and LaunchSeeking to make its own Unix adaptation, Microsoft bought a license from AT&T for Unix Version 7 in 1979. In August 1980, Microsoft announced their product would be available for 16-bit microcomputers, highlighting the fact that it would be a multiuser, multitasking system.Microsoft wasn't able to use the name Unix, meaning they had to come up with something new. They settled on XENIX. The press release stressed all of Microsoft's existing "system software" would be ported to the system and XENIX would be compatible with "all existing software written for the Unix OS."XENIX, like its Version 7 base, started life on the PDP-11 server platform, but in 1980, the Santa Cruz Operation (SCO) was entrusted with the task of porting the OS to other architectures. It was ported to the Zilog Z8000 in 1981, though this platform was not very successful. A Motorola 68000 port soon followed, allowing for more machines, including the Apple Lisa 2.Rather than selling XENIX directly to customers, Microsoft licensed the XENIX name and code to original equipment manufacturers (OEMs), who in turn sold XENIX to customers. Microsoft bought a controlling stake in SCO, who was tasked with both porting and reselling XENIX under their own name, SCO XENIX.In 1983, XENIX was ported to the Intel 8086/8088. By now, Microsoft had moved their product away from its Unix Version 7 roots by including enhancements from BSD 4.2, such as vi and the curses library, and adding features like multiple virtual consoles and support for Micnet local area networking.After its port to the x86 platform, XENIX became the most widely used version of Unix due to the platform's popularity and inexpensive hardware.The 286 EraPerformance wise, a XENIX machine was now at the very high end of the home computer market but still below the performance of the minicomputers that ruled servers.However, in 1984 there was significant buzz around IBM's new 286 AT standard (Figure 1), as well as the (incorrect) belief that DOS would soon become obsolete.

Figure 1: The IBM 286 AT brought better performance, narrowing the gap with the minicomputers that ruled the server space. © MBlairMartin, CC BY-SA 4.0 [1]

While staying backwards compatible with the 8086 and 8088 XT, 286 machines allowed for 16MB of RAM over the XT's maximum 640KB, and they also allowed for larger hard drives – critically important when creating a decent server.In August 1984, Microsoft released XENIX 286. This system was capable of dual-booting with MS-DOS, included new features from BSD 4.1 and Unix System III, and was capable of supporting eight dumb terminal connections. (Besides XENIX and DOS, Microsoft at one point developed an in-between product called XEDOS that was never released. See box, "XEDOS: One Product Too Many.")

XEDOS – One Product Too Many

Microsoft's strategy in the early 1980s was more than just DOS and XENIX. There was a third product that didn't see the light of day. Mostly.Information on XEDOS is extremely hard to find, but Microsoft had a multi-tiered plan for their customers: DOS for basic users, XEDOS for intermediate users, and XENIX for people with serious computing needs.Byte magazine's January 1982 editorial [2] discussed Microsoft's offerings, with MS-DOS as Microsoft's "single-user, single-tasking operating system." Customers who wanted multiuser and multitasking support would buy XENIX, Microsoft's premium product.However, the magazine went on to say: "In the middle will be XEDOS, a new operating system written in the C language for the 68000, Z-8000, 8086, and LSI-11 processors. XEDOS will contain XENIX-like features and will be essentially a single-user version of XENIX."Although XEDOS itself was never released, its features were integrated with MS-DOS 2.0, which had a hierarchical filesystem, basic piping, and I/O redirection.There were also hidden commands and functions in DOS 2.0 that were undocumented and discontinued from DOS 3.0 onwards. For instance, there was a SWITCHAR control that used Unix switches and forward slashes, and an AVAILDEV function that allowed devices to be addressed as /dev files, as under Unix.

The chief strength behind XENIX was that it was a robust multiuser and multitasking environment. This gave XENIX the edge in very specific markets, whose clients found the OS indispensable.XENIX became the go-to system for early ISPs, who often used it for Internet gateways and mail systems. Before long, ISPs were ditching enormous PDP computers for a simple PC with a large hard drive.IBM's $5,000 AT 286 made for the cheapest Unix workstation around, which became an immediate hit in university computing labs worldwide.Furthermore, because XENIX allowed inexpensive dumb terminals to connect to a central machine, it was perfect for any setting where users needed to share the same centralized resource.XENIX became popular with retailers, fast-food outlets, and for scheduling systems used in hotels and restaurants. Internally, Microsoft used XENIX for handling email, and it was used by everyone in the company, right up to Bill Gates.By the late 1980s, Microsoft had become the biggest Unix company, with XENIX having the largest number of installations of any Unix variant.The 386 EraDespite the heady success of XENIX on the 286, as computing shifted towards the 32-bit 386, the Unix market was becoming more competitive, and Microsoft grew nervous about its Unix offering.Unix parent company AT&T had teamed up with Digital Research Inc. (DRI) for the latest commercial release of Unix System V, and DRI's compilers were to become the agreed System V standard.Meanwhile, IBM had unveiled its own Unix variant, PC/IX, which was developed independently of Microsoft and XENIX, effectively snubbing the two companies' collaboration thus far. Microsoft didn't want to compete with Unix parent company AT&T or deal with the added competition of corporate giant IBM.Microsoft decided to essentially pull the plug on XENIX and entered into a partnership instead with IBM to develop OS/2 – an advanced desktop that appeared to be the future of operating systems.In 1987, Microsoft transferred the ownership of XENIX to SCO, while retaining a minor stake in their company.Meanwhile SCO busied themselves with the new 386 edition of XENIX, which they updated to conform to the latest System V standard. That same year, SCO shipped Microsoft XENIX System V/386, the first 32-bit operating system for x86 machines.This new release added support for TCP/IP, SCSI, and a menu-driven business shell. Backwards compatibility was maintained with Microsoft XENIX 286, for which a large software base already existed.

1

2

3

4

Next »

Buy this article as PDF

Express-Checkout as PDF

Price $2.95 (incl. VAT)

Buy Linux Magazine

SINGLE ISSUES

Print Issues

Digital Issues

 

SUBSCRIPTIONS

Print Subs

Digisubs

 

TABLET & SMARTPHONE APPS

US / Canada

UK / Australia

Related content

Introduction

This month in Linux Voice.

more »

ASK KLAUS!

Klaus Knopper is the creator of Knoppix and co-founder of the LinuxTag expo. He currently works as a teacher, programmer, and consultant. If you have a configuration problem, or if you just want to learn more about how Linux works, send your questions to: klaus@linux-magazine. com

more »

Please enable JavaScript to view the comments powered by Disqus.

comments powered by Disqus

Subscribe to our Linux Newsletters

Find Linux and Open Source Jobs

Subscribe to our ADMIN Newsletters

Support Our Work

Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.

News

ZorinOS 17.1 Released, Includes Improved Windows App Support

Linux

, open source

, Operating Systems

, Security

, Zorin OS

If you need or desire to run Windows applications on Linux, there's one distribution intent on making that easier for you and its new release further improves that feature.

Linux Market Share Surpasses 4% for the First Time

Chrome

, Linux

, Mac

, open source

, Operating Systems

, Windows

Look out Windows and macOS, Linux is on the rise and has even topped ChromeOS to become the fourth most widely used OS around the globe.

KDE’s Plasma 6 Officially Available

KDE

, open source

, Plasma

, Wayland

KDE’s Plasma 6.0 "Megarelease" has happened, and it's brimming with new features, polish, and performance.

Latest Version of Tails Unleashed

DEBIAN

, Gnome

, Linux

, privacy

, Tails

Tails 6.0 is based on Debian 12 and includes GNOME 43.

KDE Announces New Slimbook V with Plenty of Power and KDE’s Plasma 6

Hardware

, KDE

, laptop

, Linux

, open source

, Plasma

If you're a fan of KDE Plasma, you'll be thrilled to hear they've announced a new Slimbook with an AMD CPU and the latest version of KDE Plasma desktop.

Monthly Sponsorship Includes Early Access to elementary OS 8

elementary OS

, Linux

, open source

, Wayland

If you want to get a glimpse of what's in the pipeline for elementary OS 8, just set up a monthly sponsorship to help fund its continued existence.

DebConf24 to be Held in South Korea

Community

, DEBIAN

, open source

Busan will be the location of the latest DebConf running July 28 through August 4

Fedora Unleashes Atomic Desktops

Desktop

, Fedora

, open source

Fedora has combined its solid distribution with rpm-ostree system to make it possible to deliver a new family of Fedora spins, called Fedora Atomic Desktops.

Bootloader Vulnerability Affects Nearly All Linux Distributions

Linux

, Operating Systems

, Security

The developers of shim have released a version to fix numerous security flaws, including one that could enable remote control execution of malicious code under certain circumstances.

Microsoft Says VS Code Will Work with Ubuntu 18.04

Desktop

, Linux

, Ubuntu

If you're a user of Microsoft's VS Code and you're still using Ubuntu 18.04, you can breathe a sigh of release that the IDE will continue working… for a while.

Tag Cloud

Administration

Community

Desktop

Events

Hardware

Linux

Linux Pro Magazine

Mobile

Programming

Software

Ubuntu

Web Development

Windows

free software

open source

About Us

Write for Us

Contact

Legal Notice

Privacy Policy

Manage Subscription

Glossary

Raspberry Pi

© 2024 Linux New Media USA, LLC

UNIX传奇50年,操作系统中的老兵,一代程序员的挚爱 - 知乎

UNIX传奇50年,操作系统中的老兵,一代程序员的挚爱 - 知乎切换模式写文章登录/注册UNIX传奇50年,操作系统中的老兵,一代程序员的挚爱人民邮电出版社​已认证账号大多数人都知道Windows和macOS是电脑上常用的两种操作系统,机智点儿的人还知道手机的两大阵营Android和iOS也是操作系统的名字,再专业一些的人则对Linux的名字如雷贯耳,而我们今天要讲的主要对象,就是macOS和Linux共同的爷爷——UNIX操作系统。诞生于贝尔实验室的一台被丢弃的仅有8K个18位字长内存的DEC PDP-7计算机上,到打破系统软件要用汇编语言编写的传统,最终成为一个影响整个计算机界的操作系统——到底是什么让UNIX操作系统如此成功呢?是Ken Thompson和Dennis Ritchie创造并给与UNIX的“KISS”?是AT&T无心插柳柳成荫地将UNIX开源?是各大供应商为争夺标准化权利的UNIX之战?亦或者是UNIX系统实现上的百家争鸣?今天,人邮君就带大家来了解UNIX的前世今生。1、UNIX诞生由于早期的计算机并不像现在的个人计算机一样普遍,只有极少数人才有机会接触到,并且当时的计算机架构很难使用,操作接口麻烦。因此在1965年前后,由贝尔实验室(Bell)、麻省理工学院(MIT)及通用电气公司(GE)共同发起了Multics的项目,Multics(全称:MULTiplexed Information and Computing System)是一个全面的、通用的分时操作系统,Multics项目的目的是想让大型主机可以同时提供300台以上的终端机连接使用的目标。可是,到了1969年前后,项目进度落后,资金也短缺,在认为Multics项目不可能成功之后,贝尔实验室退出了该项目的研究工作。最终Multics项目还是成功地开发出了他们的系统,虽然Multics系统后来没有得到业界的重视,但是该项目培养出了很多优秀的人才,其中就包括创造了UNIX的Ken Thompson和Dennis Ritchie。Ken Thompson(左)和Dennis Ritchie(右)Ken Thompson回到贝尔实验室后,面对实验室落后的仍以批处理工作的计算机环境,非常怀念Multics。后来,因为想测试一个自己在闲置的PDP-7上开发的“太空旅行”的游戏,他希望开发一个小的操作系统以供使用。此时是1969年8月,他的妻儿回老家探亲去了,于是Thompson有了额外的三周时间实施他的计划。他需要写三个程序,每周写一个:用来创建代码的编辑器,将代码转换为PDP-7能运行的机器语言的汇编器,再加上内核的外层(shell)——一个操作系统就齐活了。根据Multics项目的失败经验,Thompson将Multics庞大而复杂的系统进行简化,于是同实验室的朋友都戏称这个系统为Unics(该系统就是UNIX的原型)。Thompson的这个文件系统有两个重要的概念,分别是:所有的程序或系统装置都是文件不管构建编辑器还是附属文件,所写的程序只有一个目的,就是要有效地完成目标这些概念在后来对于Linux的开发有相当重要的影响。这也就是著名的KISS(keep it simple, stupid)原则,即“简单原则”——尽量用简单的方法解决问题,这是“UNIX哲学”的根本原则。由于Thompson写的Unics实在太好用了,所以在贝尔实验室内部广为流传,并且经过了多次改版。但是因为Unics是以汇编语言写的,高度依赖硬件,所以每次安装到不同的机器上都需要重新编写汇编语言。于是Thompson与Ritchie合作,想将Unics改用更高级的程序语言来编写,从而提高可移植性。他们先选择了BCPL,然后又尝试PASCAL,发现编译出来的内核性能都不是很好,因为这些语言都不太贴近硬件操作。于是,两人(主要是Dennis Ritchie)决定自己开发一套新的语言:这就是大名鼎鼎的 C 语言。Ken Thompson(坐着)和Dennis Ritchie在PDP-11前工作1973年,Dennis Ritchie用C语言重写与编译了Unics的内核,并发行出UNIX的正式版本。“重写”说起来简单,实际上并不是简单的从汇编到C语言的翻译,这里边包含了很多的发明和创造。比如在此期间引入的“pipe”(管道)功能,后来就成为了UNIX的一大优势,这种功能使得程序间输出结果的传递非常容易,因而被后世的操作系统大量拷贝,其中包括UNIX的各种变体、Linux、DOS和Windows。重写过的UNIX很快就流行起来,此后便一直应用于生产领域。就这样,一款与世界上第一块半导体存储器诞生于同一时代、完成的计算量比所有其他分时系统加起来的总和还要多的经典操作系统——UNIX正式诞生了。1983年,Thompson和Ritchie因“创造UNIX操作系统和C程序设计语言”而获得了图灵奖,又于1990年获得了IEEE汉明奖、1999年被授予美国国家技术奖章、2011年获得了日本信息通信奖,并于2019年入选美国国家发明家名人堂。2、UNIX之战20世纪80年代,人们在UNIX编程环境和C程序设计语言的标准化方面已经做了很多工作。UNIX版本种类的剧增以及它们之间差别的扩大,导致很多大用户呼吁对其进行标准化。于是各大供应商为建立UNIX标准而展开了斗争,后来被称为“UNIX之战”。在1980年代中期,UNIX的三个常见版本是AT&T的System III,Microsoft的Xenix和IBM认可的PC/IX。(1)AT&T的System III先说说AT&T,拥有贝尔实验室的美国电话电报公司(AT&T)创造了UNIX,当他们开始认识到UNIX的价值时,源代码早已外散。尽管他们试图用System V建立新的UNIX标准,并且还与领先的BSD UNIX供应商SunMicrosystems于1987年开始开发统一系统,但遗憾的是,AT&T与Sun联合开发的BSD-System V在UNIX各“开放”版本之间的商业竞争中败下阵来。1993年,AT&T将UNIX版权卖给Novell。(2)Microsoft的Xenix再来是微软的Xenix。1979年,微软从AT&T公司获得授权,为英特尔处理器所开发一种UNIX操作系统,由于它购买的授权无法直接让该操作系统以“UNIX”为名,于是该系统命名为Xenix,可用在个人电脑及微型计算机上使用。对于微软来说,由于需要从AT&T公司获得授权,因而这是一种自己难以把握其未来发展命运的操作系统,而且他也深明UNIX的致命缺陷——早期混乱的授权,让UNIX从来就没有通用版存在,所以,盖茨在寻找机会退出这个领域。1987年,微软与SCO达成了一项协议,以持有后者股票25%的条件转让了Xenix的所有权,转而开发一款“可移植的”的操作系统——“UNIX杀手”,即微软的Windows NT。(3)、IBM认可的PC / IXPC/IX是美国交互式系统公司(Interactive Systems Corporation,简称ISC)开发的一款个人计算机交互式执行程序,也是IBM PC XT的第一个UNIX实现。尽管PC/IX直接解决了XT硬盘驱动器的问题,并且与MS-DOS相比,它具有明显的速度优势,但由于8088芯片缺乏真正的内存保护,IBM只得销售PC/IX的单用户许可证。900美元的售价注定不能让PC/IX成为商业上的成功,1991年,ISC将其ISC UNIX操作系统出售给Sun Microsystems。八十年代末,五花八门、不同版本的UNIX遍地开花,为其中一个版本写的应用程序,常常要修改后才能运用到另一个上,这对于专业的程序员来说也许不是太大问题,但对技术实力较弱的用户来说,则平添了许多麻烦。3、尘埃落定UNIX的各种版本和变体都起源于在PDP-11系统上运行的UNIX分时系统第6版(1976年) 和第7版(1979年) (通常称为V6和V7)。这两个版本是在贝尔实验室以外首先得到广泛应用的UNIX系统。从整体上来看,这棵树上共演进出以下3个分支:AT&T分支,从此引出了System和SystemV (被称为UNIX的商用版本) 加州大学伯克利分校分支,从此引出4.xBSD实现类UNIX操作系统UNIX系统的发展时间线发展至今,UNIX系统的实现也算是大浪淘沙,留下了一些经典的产品:1、SVR4(UNIX System V Release 4)SVR4是AT&T的UNIX系统实验室的产品,它将AT&T UNIX系统V 3.2版(SVR3.2)、Sun Microsystems公司的SunOS操作系统、加州大学伯克利分校的4.3BSD以及微软的Xenix系统的功能合并到了一个一致的操作系统中。其源代码于1989年后期发布,在1990年开始向终端用户提供。SVR4符合POSIX 1003. 1标准和X/Open XPG3标准。2、4.4BSD (Berkeley Software Distribution)BSD是由加州大学伯克利分校的计算机系统研究组(CSRG)研究开发和分发的。4.4BSD系统不再受AT&T许可证的限制,这样,大家都可以得到源代码。后来,也有许多基于BSD的免费操作系统,比如知名的FreeBSD。在加州大学伯克利分校的CSRG决定终止其在UNIX操作系统的BSD版本的研发工作,而且386BSD项目被忽视很长时间之后,为了继续坚持BSD系列,基于4.4BSD-Lite操作系统形成了FreeBSD项目。3、LinuxLinux是一种提供类似于UNIX的丰富编程环境的操作系统,在GNU公用许可证的指导下,Linux是免费使用的。Linux的普及是计算机产业中的一道亮丽风景线。Linux经常是支持较新硬件的第一个操作系统, 这一点使其引人注目。Linux是由Linus Torvalds在1991年为替代MINIX而研发的。一位当时名不见经传人物的努力掀起了澎湃巨浪,吸引了遍布全世界的很多软件开发者,在使用和不断增强Linux方面自愿贡献出了他们大量的时间。4、Mac OS X与其以前的版本相比,Mac OS X使用了完全不同的技术。其核心操作系统称为“Darwin",它基于Mach内核、FreeBSD操作系统以及具有面向对象框架的驱动和其他内核扩展的结合。MacOS X 10.5的Intel部分已经被验证为是一个UNIX系统。5、Solaris Solaris是由Sun Microsystems (现为Oracle) 开发的UNIX系统版本。它基于SVR4, 在超过15年的时间里,Sun Microsystems的工程师对其功能不断增强。它是唯一在商业上取得成功的SVR4后裔,并被正式验证为UNIX系统。2005年,Sun Microsystems把Solaris操作系统的大部分源代码开放给公众,作为OpenSolaris开放源代码操作系统的一部分,试图建立围绕Solaris的外部开发人员社区。如今,这些新秀们在软件行业崛起,UNIX似乎已经退居二线,很少被年轻一代提起。但是,在操作系统发展史上,曾有过UNIX这个百战不死的老兵!没有它,也就没有如今的Linux、BSD、Solaris、MacOS X……大家可以通过计算机先驱、《C程序设计语言》作者——布莱恩·W. 克尼汉的《UNIX传奇》一书,来探索UNIX诞生的传奇故事,以及那些年贝尔实验室摘得9项诺贝尔奖和4项图灵奖的奥秘。========赠人玫瑰,手留余香~不要忘记点赞、收藏、关注 @人民邮电出版社 哦!一键三连,感恩有你~编辑于 2021-07-22 18:49操作系统LinuxmacOS​赞同 16​​添加评论​分享​喜欢​收藏​申请

history - What were the differences between Xenix and Unix? - Retrocomputing Stack Exchange

history - What were the differences between Xenix and Unix? - Retrocomputing Stack Exchange

Stack Exchange Network

Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Loading…

Tour

Start here for a quick overview of the site

Help Center

Detailed answers to any questions you might have

Meta

Discuss the workings and policies of this site

About Us

Learn more about Stack Overflow the company, and our products

current community

Retrocomputing

help

chat

Retrocomputing Meta

your communities

Sign up or log in to customize your list.

more stack exchange communities

company blog

Log in

Sign up

Retrocomputing

Home

Questions

Tags

Users

Companies

Unanswered

Teams

Stack Overflow for Teams

– Start collaborating and sharing organizational knowledge.

Create a free Team

Why Teams?

Teams

Create free Team

Teams

Q&A for work

Connect and share knowledge within a single location that is structured and easy to search.

Learn more about Teams

What were the differences between Xenix and Unix?

Ask Question

Asked

3 years ago

Modified

3 years ago

Viewed

3k times

15

According to https://en.wikipedia.org/wiki/Xenix by the beginning of the nineties, SCO was selling 32-bit 386 versions of both Xenix and Unix. According to https://news.ycombinator.com/item?id=12235900 their Unix cost $1000, and I have an unsourced figure of $500 for Xenix. From the above Wikipedia article

SCO released its SCO UNIX as a higher-end product, based on System V R3 and offering a number of technical advances over XENIX; XENIX remained in the product line.

What exactly were the technical advantages that made their Unix worth more than Xenix?

historyoperating-systemunixxenix

Share

Improve this question

Follow

asked Feb 25, 2021 at 3:56

rwallacerwallace

60.7k1717 gold badges226226 silver badges547547 bronze badges

18

6

One starting point: Xenix was a port of UNIX system III, where SCO UNIX was a port of UNIX System V.

– Jerry Coffin

Feb 25, 2021 at 4:25

3

But I gather that the question is asking about the differences between Xenix and SCO UNIX at the time of the latter’s release, not the end of the Xenix line.

– Stephen Kitt

Feb 25, 2021 at 6:08

2

@Schezuk Something ain't right...the PC/XT was an 8088 machine. There were definitely some 8086 machines that ran Xenix - e.g., Altos 586 - I had one, but I didn't know better at the time - what I knew was the CP/M & DOS world so I got it with MP/M-86 - which was actually quite nice, though I had to hack it a bit to get past some stupid limitations.

– manassehkatz-Moving 2 Codidact

Feb 25, 2021 at 7:11

3

There was also a 286 version of Xenix but it was horribly slow. The 386 version was much snappier even when run on the same hardware. My first work PC when I started working in 1990 was a 386/33 and had Xenix 286 installed. After testing 2 or 3 things I reformatted the disk to install DOS 3.3. I was recruted for C embedded programming and was not in the DB division which used Informix on SCO-Xenix/Unix.

– Patrick Schlüter

Feb 25, 2021 at 8:25

3

The differences between SCO-Xenix and SCO-Unix felt like comparing 2 Linux distributions that are 4 years apart, i.e. a lot of small details have changed but the global feel is the same.

– Patrick Schlüter

Feb 25, 2021 at 8:27

 | 

Show 13 more comments

3 Answers

3

Sorted by:

Reset to default

Highest score (default)

Date modified (newest first)

Date created (oldest first)

21

Using SCO UNIX describes the history of XENIX and SCO UNIX and provides a brief summary of the technical differences.

As Raffzahn explains, SCO UNIX is the successor to XENIX. XENIX is a licensed version of UNIX; it was called XENIX because initially, AT&T didn’t allow its licensees to use the UNIX trademark. This was relaxed in 1989, which allowed SCO to use the trademark.

However there’s more than a name change to SCO UNIX compared to XENIX, enough to warrant a different pricing structure (at least, enough for marketing to justify a different pricing structure). SCO UNIX was intended to be a “more compatible” release, based on AT&T System V Release 3.2:

unlike XENIX, SCO UNIX could run any 386 System V binary;

SCO UNIX was POSIX conformant with a few minor exceptions;

SCO UNIX was X/Open conformant;

SCO UNIX was a DoD “trusted” system (capable of running at C2 security level).

On the technical side, SCO UNIX introduced the Acer Fast File System, and added a number of device drivers.

None of this would have been impossible to add to XENIX of course, and SCO could have released an updated version of XENIX with all the above. Renaming the product to “SCO UNIX” helped support the UNIX compatibility story, and allowed SCO to continue selling multiple products in parallel without introducing too much confusion:

XENIX 286 for 286 PCs;

XENIX 386 for users of 386 PCs requiring a small and fast operating system;

SCO UNIX for users interested in greater compatibility and security, at the cost of reduced performance on the same hardware.

Share

Improve this answer

Follow

edited Feb 25, 2021 at 13:20

answered Feb 25, 2021 at 11:08

Stephen KittStephen Kitt

121k1616 gold badges499499 silver badges459459 bronze badges

6

2

I wouldn't consider it really a big enough change - after all, Xenix went thru several changes S7 -> SIII -> SV before with simply changing it's version number, so going from R2.3 to R3.2 while adding a few feature seams no big issue. Or is it? In fact, as I understand it, they were still for most parts the same source tree. But yeah, marketing defies all logic - always :)

– Raffzahn

Feb 25, 2021 at 11:31

4

Right, I agree it’s not so much about the changes themselves as marketing, with the availability of the name...

– Stephen Kitt

Feb 25, 2021 at 11:35

1

Put another way, even if the reasoning behind the segmentation isn’t consistent compared to previous Xenix releases, there are technical differences between Xenix and SCO UNIX, which is what the question is about.

– Stephen Kitt

Feb 25, 2021 at 12:08

True every new release contains new material. I just think it's important to point out that these are less than it might sound and the sales only overlapped in part like usual with release cycles, as the question seems under the assumptions there were many or fundamental ones.

– Raffzahn

Feb 25, 2021 at 12:25

1

The licensing arrangement with AT&T may have incurred additional costs per down-stream license sold under the Unix name, or SCO may have been amortizing a large up-front expense in that regard. The bean counters may have worried that SCO-Unix would disrupt their current Xenix revenue streams. Really, all of the above may have contributed to the additional cost.

– jwdonahue

Feb 25, 2021 at 20:42

 | 

Show 1 more comment

8

What exactly were the technical advantages that made their Unix worth more than Xenix?

For most parts: The Name. Otherwise it's simply the next release of SCO's unixoide OS.

They were only sold in parallel for a short time (ca 1989/90). While the latest Xenix version was based on System V R2.3, SCO Unix started out as System V R3.2. But using the same driver interface as Xenix.

Xenix had a long history of development since ca. 1980, but when SCO acquired the rights to the Unix name, it was clear that an 'all new' product was to be released :))

Originally Xenix was developed by Microsoft. MS licenzed Unix V7 already in the late 1970s. They did, at that time, firmly believe that Unix would be the future OS for all of their products (they were a language company) - and most of the market. They did license the source code, but not the name, so they came up with Xenix as their brand name for Unix.

MS did not sell Xenix to end customers, they only OEMed it to other companies. Much the same way they sold MS-DOS only to OEM before DOS 3.2. Notable licencees were Intel, IBM, Tandy, Siemens (Sinix) or, well, SCO.

Xenix developed from being a System 7 over System III to System V related. Unlike often assumed, Unix does not need a fully fledged MMU, it only simplifies life. In fact, SCO's twist on Xenix was the low end market. Their Xenix 3.0 (System III alike at that time) was intended for IBM-PC (MS-Xenix did of course use 286 protected mode). Not a rocket, more a soap box racer, still, worked quite fine and covered a market other unixoid systems didn't.

It wasn't until the mid 1980's (85?) that SCO Xenix was as well available for 286 class machines - now System V alike. At a later point 386 got native support as well.

In the late 80s (1987?) MS sold all rights, code and customers of Xenix to SCO for a considerable stake in SCO. Now SCO did all development on their own.

Again later (1989?) SCO bought the right to the Unix name. After that the next major Xenix release was of course renamed SCO Unix. SCO Xenix was, under that name, still maintained for 3 years for existing customers - like other releases before - but otherwise the name was history.

Other MS licencees, like Siemens, continued their development independent way into the 90s and 2000s.

Share

Improve this answer

Follow

edited Feb 27, 2021 at 8:10

Omar and Lorraine

38.8k1414 gold badges133133 silver badges274274 bronze badges

answered Feb 25, 2021 at 10:38

RaffzahnRaffzahn

221k2222 gold badges626626 silver badges912912 bronze badges

Add a comment

 | 

3

One other difference: Xenix 2.3.2 did not have a block buffer cache. Every version of SCO Unixs I've used did.

Consequence: On an IBM PS/2 model 80 (?, 20 MHz 386, Micro Channel) the max throughput to the hard drive was 35 KB/s. On an AST Research 486 with a DPT SmartCache SCSI controller (high end for 1992!) we maxed out at 45 KB/s.

Share

Improve this answer

Follow

answered Feb 26, 2021 at 0:31

d3jonesd3jones

91144 silver badges33 bronze badges

Add a comment

 | 

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged historyoperating-systemunixxenix.

The Overflow Blog

A leading ML educator on what you need to know about LLMs

How Stack Overflow is partnering with Google to encourage socially...

Featured on Meta

Our partnership with Google and commitment to socially responsible AI

Shifting the data dump schedule: A proposal

Linked

17

Why was the DOS kernel discarded?

14

Can one isolate processes on a 8086?

Related

11

Does "Unix" and "UNIX" represent the same thing?

28

What's the relationship betweeen MS-DOS and XENIX?

8

What were the Major Public Access Unix Systems Available in the 1980s-90s?

33

What are the major technical difference between Multics and Unix?

6

When was beeping invented, in a user interface sense?

14

When was the 6502 second sourced?

7

What is the oldest UNIX available for modern systems?

12

What was the original unix font?

9

Historical installed base figures for early lines of personal computer?

Hot Network Questions

Why were Slughorn's memories "congealed"?

Why does an inductor's inductance decrease with current?

One brother and one sister - siblings expressed in French

Are there languages L1 ⊆ L2 ⊆ L3 when L1 and L3 are NP-Complete languages and L2 ∈ P?

Riding with clipless pedals around the city

How can I remove a completely stuck screw in a wall?

E1 gradually goes flat as I move up the fretboard

Would the diet described below sustain a human?

Why does this AM radio circuit not work?

SSH parameterized config entries?

Cut folder names out of string

Why are supercritical airfoils not used in GA aircraft?

Why is Mathematica showing a root twice from Reduce or Solve?

"Little Pussy Malanga, sometimes confused with fellow reputed mobster Big Pussy Bonpensiero, ..." — What does "fellow reputed mobster" mean?

If a function mutates outer state during execution but reverts the outer state into original state after execution, does it still contain side effect?

How can I get an average from a query dataset in SQL Server?

Comedy SF radio show. Radio 4 or Radio 4 extra (UK) Aliens base their society on a book of Noel Coward's plays

Is entropy physical or idealistic?

Why does Cicero change gear in this example from the Catiline Orations?

Official length of a movie

PTIJ: Mourning for batteries

What is expected resistance of MCU power supply pins?

Did this command do anything to my Operating System?

Strip filesize from rclone file list

more hot questions

Question feed

Subscribe to RSS

Question feed

To subscribe to this RSS feed, copy and paste this URL into your RSS reader.

Retrocomputing

Tour

Help

Chat

Contact

Feedback

Company

Stack Overflow

Teams

Advertising

Collectives

Talent

About

Press

Legal

Privacy Policy

Terms of Service

Cookie Settings

Cookie Policy

Stack Exchange Network

Technology

Culture & recreation

Life & arts

Science

Professional

Business

API

Data

Blog

Facebook

Twitter

LinkedIn

Instagram

Site design / logo © 2024 Stack Exchange Inc; user contributions licensed under CC BY-SA. rev 2024.3.12.6097

WinWorld: Xenix 386

WinWorld: Xenix 386

WinWorld

Library

Forum

Chat

Contact

Links

About

Donate

Search

Not logged in

Sign up

Log in

Recover password

Xenix 386

Xenix was the variant of UNIX originally published by Microsoft, later sold to SCO. It added a variety of technical enhancements over System V Unix, including a menu-driven business shell. It was ported to many different platforms from a PDP-11 including the Altos 8600 (First x86 port), IBM PC, Intel System 86, TRS-80 Model 16, SCP Gazelle II, and Apple Lisa.

Software products include:

The Xenix Software Development System,

Microsoft Multiplan 2.x and Microsoft Multiplan 3.x,

Microsoft Word 3.0 and Microsoft Word 5.x,

and FoxBase Plus 1.00

Please note that version numbering is all over the place depending on the vendor.

Wanted: More ports for different platforms.

Available releases

Apple Lisa

IBM PC 1.00

Tandy 16/6000 3.x

IBM PC 2.00

8086

286

386 (current)

SysV 386 v3.x

OpenServer 5.x

UnixWare 7.x

Screenshots

Release notes

Please note that the early Xenix releases are EXTREMELY buggy and are very picky about the hardware they run on.

These seem to work using the PCEM emulator, and set to hardware specifications appropriate to the time. (386 or 486 with 4 or 8 MB of RAM and an ~80MB hard drive that matches a predefined BIOS type).

Installation instructions

The standard "386" versions are for generic "AT" architectures. The "GT" versions include SCSI support. The "PS" versions are specifically for IBM PS/2 Microchannel based computers.

SCO Xenix 2.x is based on Unix System V.

Manuals are available on Bitsavers: http://www.bitsavers.org/pdf/sco/system_V_2.x/2.3.2/

The tool located here can retrieve working product keys:

https://github.com/Octocontrabass/brandy

Information

Product type

OS

Vendor

SCO

Release date

1988

Minimum CPU

386

User interface

Text

Platform

Unix

Download count

28 (8 for release)

Downloads

Download name

Version

Language

Architecture

File size

Downloads

SCO Xenix 386 2.2.3b (5.25-1.2mb)

386 2.2.3b

English

1.96MB

1

SCO Xenix 386 2.2.3c (3.5-720k)

386 2.2.3c

English

2.1MB

1

SCO Xenix 386 2.3.4q (3.5-1.44mb)

386 2.3.4q

English

7.29MB

1

SCO Xenix 386GT 2.3.2f (5.25-1.2mb)

386GT 2.3.2f

English

2.36MB

0

SCO Xenix 386GT 2.3.4h (3.5-1.44mb)

386GT 2.3.4h

English

6.22MB

5

SCO Xenix 386PS 2.2.2f (3.5-720k)

386PS 2.2.2f

English

28.37MB

0

SCO Xenix 386PS 2.2.3f (3.5-720k)

386PS 2.2.3f

English

27.19MB

0

Comments

Please enable JavaScript to view the comments powered by Vanilla.

Comments by Vanilla

© 2024 WinWorld | Powered by Adventure