Unix Operating Systems

The latest articles related to Unix Operating Systems

Gossip (software) – Introduction

Gossip is an instant messaging client for Unix-like operating systems. It uses XMPP protocol and adheres to GNOME’s published human interface guidelines. It is written in the C programming language, and its main developer is Mikael Hallendal, founder of Imendio. Adapted from the Wikipedia article Gossip (software), under the G. N. U. Free Documentation License. [...]

Cone – Computing

*Cone, a text-based e-mail and news client for Unix-like operating systems *Cone tracing, a derivative of the ray tracing algorithm that replaces rays, which have no thickness, with cones *Second-order cone programming a library of routines that implements a predictor corrector variant of the semidefinite programming algorithm Adapted from the Wikipedia article Cone, under the [...]

Redirection (computing) – Introduction

redirection is a function common to most command-line interpreters, including the various Unix shells that can redirect standard streams to user-specified locations. In unix-like operating systems programs do redirection with the dup2(2) system call, or its less-flexible but higher-level stdio analogues, freopen(3) and popen(3). Adapted from the Wikipedia article Redirection (computing), under the G. N. [...]

Xinet – History

A key part of Xinet history has been the company’s expertise in Unix operating systems. AT&T first distributed their Unix source-code to university researchers at Carnegie Melon and U.C. Berkeley. U.C. Berkeley researchers popularized their own version of Unix, which became known as “Berkeley Unix.” In 1979, when AT&T announced its intention to commercialize Unix, [...]

HeliOS – Introduction

HeliOS was a Unix-like operating system for parallel computers developed and sold by Perihelion Software. It was most commonly used on various Transputer systems, but also supported other architectures. The system provided a micro-kernel that implemented a distributed name space and messaging protocol, through which services were accessed. A POSIX compatibility library enabled the use [...]

The Open Group – History

By the early 1990s, the major Unix players had begun to realize that the standards rivalries known as the Unix wars were causing all participants more harm than good, leaving Unix open to emerging competition from Microsoft. The COSE initiative in 1993 can be considered to be the first unification step and the merger of [...]

HZ (character encoding) – HZ decoders

The first HZ decoder was written in 1989 by the code’s inventor for the Unix operating system. The hztty program, also for the Unix operating system, was also among the first and one of the most popular HZ decoders. It deviates from the specification in that it will display the escape sequences (i.e., “~{” and [...]

Ken Thompson – Introduction

Ken Thompson (born February 4, 1943), commonly referred to as ken in hacker circles, is an American pioneer of computer science notable for his work with the B programming language and his shepherding of the Unix and Plan 9 operating systems. Most recently Thompson is also the co-creator of Google’s programming language Go. Adapted from [...]

Pipeline (Unix) – History

The pipeline concept and the vertical-bar notation was invented by Douglas McIlroy, one of the authors of the early command shells, after he noticed that much of the time they were processing the output of one program as the input to another. His ideas were implemented in 1973 when Ken Thompson added pipes to the [...]

Sed – Introduction

sed (”stream editor”) is a Unix utility that (a) parses text files and (b) implements a programming language which can apply textual transformations to such files. It reads input files line by line (sequentially), applying the operation which has been specified via the command line (or a ”sed script”), and then outputs the line. It [...]

Moonlight (runtime) – Introduction

Moonlight is a free and open source implementation of Microsoft’s Silverlight for Linux and other Unix based operating systems, developed by the Mono Project. Like Silverlight, Moonlight is a web application framework that provides functionalities similar to those in Adobe Flash, integrating multimedia, graphics, animations and interactivity into a single runtime environment. Adapted from the [...]

MaslowWM – Introduction

MaslowWM is a window manager for the X Window System, allowing graphical applications to be run on Unix-like operating-systems. It is designed to be easily usable and feature-rich, but not so many features that becomes unusable. MaslowWM has many of the same concepts as most Window Managers, but implements them differently. Adapted from the Wikipedia [...]

TinTin++ – Distribution

TinTin++ is currently distributed under the GNU General Public License, and works on most Unix-like operating systems. A port for Microsoft Windows called WinTin++ bundles TinTin++ with the PuTTY terminal emulator. A universal binary is available for Mac OS X. Adapted from the Wikipedia article TinTin++, under the G. N. U. Free Documentation License. Please [...]

Temporary file – Inter-process communication

Most operating systems offer primitives such as pipes, sockets or shared memory to pass data among programs, but often the simplest way (especially for programs that follow the Unix philosophy) is to write data into a temporary file and inform the receiving program of the location of the temporary file. Adapted from the Wikipedia article [...]









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