UXNIX系统V／386系统调用的实现剖析

９４０３０ＵＸＮＩＸ系统Ｖ／３８６系统调用的实现剖析计算机世界月刊·—１９９３（１０）．—１８～２１分析了以Ｉｎｔｅｌ８０３８６为基础的ＵＮＩＸ系统Ｖ／３８６操作系统的系统调用的实现细节，并以系统调用ｃｒｅａｔ为例详细描述了系统的执行过程。UXNIX系统V...     

UNIX系统V／3856系统调用的实现剖析

该文分析了以Ｉｎｔｅｌ８０３８６为基础的ＵＮＩＸ系统Ｖ／３８６操作系统的系统调用的实现细节，并以系统调用ｃｒｅａｔ为例详细描述了系统的执行过程。     

UNIX系统应用

ＵＮＩＸ操作系统是当今最新流行和最具生命力的多用户操作系统。我国已确定将开放式ＵＮＩＸ操作系统为主流操作系统，本文由浅入深地介绍ＵＮＩＸ操作系统及其使用。其中包括系统概况与有关的基本概念；硬件环境的组成与连接；系统地进入与退出；ＵＮＩＸ ｓｈｅｌｌ。着重介绍了ｓｈｅｌｌ命令集成功能；文件管理与操作；通信；全屏幕编辑工具；进程控制，ｓｈｅｌｌ程序设计等。本文可作为学习使用ＵＮＩＸ系统的参考。掌握了本     

增加UNIX系统调用的实现技术

本文讨论了在ＵＮＩＸ上增加系统调用的实现技术，探讨了ＵＮＩＸ汇编的格式，从而提出了增强用户的编程环境及改造ＵＮＩＸ的有用方法。     

Linux系统调用的实现技术

Ｌｉｎｕｘ是基于Ｉｎｔｅｌ ＰＣ机与ＵＮＩＸ兼容的操作系统,本文详细的分析了Ｌｉｎｕｘ系统调用的实现技术,提出了拦截和增加Ｌｉｎｕｘ系统调用的方法,为改造Ｌｉｎｕｘ提供了有效途径。     

UNIX／XENIX系统中DOSCP命令的改进

ＵＮＩＸ／ＸＥＮＩＸ系统中ＤＯＳＣＰ命令的改进慈溪市邮电局网管中心陈翔众所周知，ＵＮＩＸ／ＸＥＮＩＸ操作系统给你提供了一个丰富的工作环境，其众多强大的实用程序．是Ｗ）Ｓ操作系统所望尘莫及的。在此基础上，如果你能熟练地掌握并运用ＳＨＥＩ－１一语言。就能...     

Hacker攻击与UNIX系统

在全世界范围内作服务器的计算机绝大多数是ＵＮＩＸ操作系统工作站,因此,ＵＮＩＸ操作系统是ＨＡＣＫＥＲ攻击的主要对象,也是我们要保护的重点。ＵＮＩＸ操作系统的开放性使ＵＮＩＸ操作系统存在着安全隐患。如口令不安全、系统文件保护方面的问题、特权用户、系统管理员的疏忽、解密等软件工具的存在、数据加密方面存在的问题,这些因素使ＵＮＩＸ系统的安全性降低。现在就讨论与ＵＮＩＸ系统有关的一些安全问题。１与ＵＮＩＸ系统安全有关的文件与软件１）／ｅｔｃ／ｐａｓｓｗｄ、／ｅｔｃ／ｓｈａｄｏｗｐａｓｓｗｄ与ｓｈａｄｏｗ…     

UNIX操作系统X－Window汉字系统的实现技术

本文论述了在ＵＮＩＸ操作系统Ｘ－Ｗｉｎｄｏｗ窗口环境下实现软件汉化的方法和途径，详细介绍了嵌入武汉字系统的设计思想与实现技术，包括汉字输人、输出和编辑等功能，为工作站上ＵＮＩＸ操作系统下商品化软件的汉化提供了一条可行的途径．     

UNIX操作系统从单机到多机的移植与改造技术

本文根据曙光一号并处理机上移植ＵＮＩＳ操作系统（ＳＮＩＸ）的经验，对Ｕ－ＮＩＸ操作系统从单机到多机的移植与改造技术进行了描述。包括多机硬体系结构的支持，ＵＮＩＸ源码选择，移植环境的建立，源码的改造等多方面所进行的工作。     

多机UNIX核心中的指令流控制结构—thread

Ｔｈｒｅａｄｓ－指令流结构成为多处理机ＵＮＩＸ操作系统中的一个基本结构。随着ＵＮＩＸ在多机环境下的不断开发，细颗粒开发，或者说指令级并发对提高系统的总处理能力显得越来越重要，并已从传统ＵＮＩＸ中的进程概念，发展为多处理机ＵＮＩＸ中的指令流／进程的概念。本文介绍了ｔｈｒｅａｄ的基本概念，ｔｈｒｅａｄ的构造，ｔｈｒｅａｄ的各种操作和多机ＵＮＩＸ中的一些实现算法。     

A critique of unix

The UNIX operating system enjoys an ever increasing popularity throughout the computing community; there will be 1.4 million UNIX licences distributed by 1985, rising at a rate of about 400,000 per annum. With universal acceptance of a system comes a dangerously high degree of inertia. Consider the analogous area of programming languages, where there has been great resistance to change, despite major advancements. This paper presents a critique of UNIX, based on three areas which we consider to be of vital importance to future operating systems. These areas are operating system structures and design, programming support environments and distributed computing. The criticisms presented are in no way intended to discredit UNIX. UNIX compares favourably with most of the present generation of operating systems. The intention is to highlight deficiencies in the state of the art in operating system design.     

The Economics of UNIX

The emergence of a commercially feasible version of the UNIX operating system portends considerable change for the economics of both production and consumption in the MIS industry. UNIX has been around for 20 years and has drawn periodic attention from the MIS community, but the significance of this innovative operating system is just beginning to be felt among MIS professionals. Although it is tempting to dismiss UNIX as just another fad in information technology, the technical, economic, and social forces behind the UNIX innovation indicate that its effects will be far-reaching. This column discusses the origins and characteristics of UNIX, explores some important differences between UNIX and conventional operating systems, and presents the likely economic implications of the UNIX phenomenon for MIS management.     

The Economics of UNIX

The emergence of a commercially feasible version of the UNIX operating system portends considerable change for the economics of both production and consumption in the MIS industry. UNIX has been around for 20 years and has drawn periodic attention from the MIS community, but the significance of this innovative operating system is just beginning to be felt among MIS professionals. Although it is tempting to dismiss UNIX as just another fad in information technology, the technical, economic, and social forces behind the UNIX innovation indicate that its effects will be far-reaching. This column discusses the origins and characteristics of UNIX, explores some important differences between UNIX and conventional operating systems, and presents the likely economic implications of the UNIX phenomenon for MIS management.     

UNIX操作系统安全再分析

当今UNIX操作系统已得到广泛的普及和应用,因而UNIX的安全性是很重要的课题,其关键在于要不断增强用户的安全意识,并从系统本身来提高安全性,本文从逻辑安全角度出发,针对调整用户标识程序,超级用户两方面,仍主要就BSD4 UNIX及其兼容版本,探讨各种可能的安全违例。     

在Red Hat Linux操作系统下设置拨号服务器

出于系统安全考虑,许多计算机应用系统采用UNIX/Linux操作系统,即应用服务采用UNIX操作系统服务器,GUI客户界面应用使用Linux工作站;同样处于安全考虑,系统远程维护多采用modem拨号方式.不同于Windows操作系统提供的图形界面操作,在UNIX/Linux操作系统环境下配i PPP拨入服务器过程需要多...     

A portable PDP-11 simulator

This paper describes the design and implementation of a totally faithful, portable PDP-11 simulator that could be used in the porting of the UNIX operating system to a new target computer, without the need for a development system already running UNIX.     

UNIX for microcomputers: an alternative to better management of microcomputer resources and higher productivity

From laptops to supercomputers, UNIX¹ is leading the way to better management of resources and higher productivity, particularly in multiuser systems and open multivendor computing environments. The UNIX philosophy which is responsible, in part, for this success is captured in the phrase ‘small is beautiful’, which refers to the concept of providing a set of small, well-defined utilities which can be easily combined to develop application programs and solve computation problems. In this paper, we provide a brief introduction to the UNIX operating system and present a short history of operating systems for the PCs and describe the central role that operating systems play in providing a user-friendly environment for the users. We then compare the UNIX and DOS operating systems and argue that UNIX in many ways is superior to DOS. The advantages of UNIX over DOS are enumerated. The potential disadvantages of UNIX are discussed. The road ahead for personal computing and UNIX-based microcomputers is briefly discussed. The paper concludes by suggesting that microcomputer users should strongly consider using UNIX as an alternative to DOS.     

一个安全操作系统S—UNIX的研究与设计

S-UNIX是一个基于UNIX的安全操作系统,其目标是TCSEC的B2级以上且保持与UNIX的兼容性,本文从存取控制、审计、可信进程管理、病毒防御、隐通道分析处理、可信通路建立六个方面,介绍了S-UNIX的研究与设计,S-UNIX基本系统在386微机上初步运行表明,它极大地提高了UNIX的安全性,并能够保持与UNIX的兼容性。     

Innovative Computing with UNIX

Since its creation in 1969, the UNIX operating system has been used for such applications as telephone switching systems, transaction processing, office automation systems, artificial intelligence, and computer games. To make intelligent decisions about the application of UNIX-based systems, the MIS manager must understand the UNIX system in general, its strengths and weaknesses, and its applicability in various functional areas. This article discusses these aspects of UNIX and suggests how the MIS manager can introduce UNIX into the MIS department.