Unix on Karpoke - Just Another Blog

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Fri, 12 Jun 2026 16:12:58 +0100

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What is ‘sh’

Wed, 23 Oct 2024 18:15:51 +0100

In the world of Unix and Unix-like operating systems, ‘sh’ stands for “shell,” specifically referring to the Bourne Shell

» unixmen.com | unixmen.com

Hello world uppercase!

Wed, 28 Aug 2024 06:39:28 +0100

A repository for the most elegant and useful UNIX commands. Great commands can be shared, discussed and voted on to provide a comprehensive resource for working from the command-line

» commandlinefu.com | commandlinefu.com

SED Replace: How to Manipulate Text in Unix

Thu, 01 Aug 2024 05:43:56 +0100

The ‘replace’ functionality of sed allows users to find and replace text patterns in files or input streams.

» unixmen.com | unixmen.com

Understanding the UNIX System in Connection to AI

Mon, 29 Apr 2024 21:00:04 +0100

Everything on a computer is a stream of bytes that represent a bunch of things. If everything is represented as a file, we have one protocol. If we understand how one thing works, we can understand how a lot of different things work. When it comes to UNX, everything is a file.

» unixmen.com | unixmen.com

Unix's 'test' program and the V7 Bourne shell

Fri, 24 Nov 2023 14:38:59 +0100

Unix’s ’test’ program and the V7 Bourne shell

» utcc.utoronto.ca | utcc.utoronto.ca

A bit of Unix history on 'su -'

Tue, 18 Jul 2023 08:53:59 +0100

A bit of Unix history on ‘su -’

» utcc.utoronto.ca | utcc.utoronto.ca

Comando wc en Prolog

Tue, 22 Nov 2022 18:54:42 +0100

Comando wc en Prolog

» blog.adrianistan.eu | blog.adrianistan.eu

Scripts and programs should skip having extensions like '.sh' and '.bash'

Fri, 28 Oct 2022 07:45:49 +0100

Scripts and programs should skip having extensions like ‘.sh’ and ‘.bash’

» utcc.utoronto.ca | utcc.utoronto.ca

The history of sending signals to Unix process groups

Thu, 08 Sep 2022 02:58:53 +0100

The history of sending signals to Unix process groups

» utcc.utoronto.ca | utcc.utoronto.ca

Brian Kernighan, continúa arreglando el código de AWK

Tue, 06 Sep 2022 02:00:46 +0100

Brian Kernighan uno de los grandes en lo que refiere al mundo del software, continúa dando cátedra a muchos y es que se ha confirmado …

» David Y. Naranjo | blog.desdelinux.net

Qué fue de Brian Kernighan, pionero de la fórmula 'Hola, Mundo!' y leyenda de los primeros tiempos de Unix

Sat, 27 Aug 2022 16:52:46 +0100

“Hola, mundo!” es la fórmula tradicional usada como ejemplo cuando alguien codifica su primer programa informático. Hace un tiempo, aquí en Genbeta, repasamos…

» marcos merino | genbeta.com

Se meten los políticos. La prehistoria de Unix última parte

Sat, 01 Jan 2022 13:04:09 +0100

De las discusiones políticas más absurdas que me ha tocado vivir, sin dudas la peor es la de quienes creen que lo que determina si una organización es

» Diego Germán González | linuxadictos.com

El principio del fin. La prehistoria de Unix parte 9

Fri, 31 Dec 2021 10:30:36 +0100

Los laboratorios Bell albergaron a varios de los científicos más inteligentes de su generación. Algunos incluso llegaron a ocupar cargos gerenciales en la

» Diego Germán González | linuxadictos.com

Teoría de la Información. La prehistoria de Unix séptima parte

Sun, 26 Dec 2021 13:56:15 +0100

La Teoría de la Información, desarrollada por Claude Shannon a lo largo de su carrera, constituye la base de las comunicaciones modernas.

» Diego Germán González | linuxadictos.com

Entrevista de Brian Kernighan a Ken Thompson (ENG)

Mon, 07 Dec 2020 10:26:47 +0100

In the 1960s-1970s, Ken Thompson co-invented the UNIX operating system along with Dennis Ritchie at Bell Labs. He also worked on the language B, the operating system Plan 9, and the language Go. He and Ritchie won the Turing Award. He now works at Google. He’ll be interviewed by…

» Vintage Computer Federation | youtube.com

YSK about [Unix tools]

Wed, 25 Nov 2020 23:32:38 +0100

This Slack discussion, featuring myself in some sleep-deprived rambling, occurred in hackernoon’s official #protips channel, and has been [barely] edited for readability.

» hackernoon.com | hackernoon.com

I'm now a user of Vim, not classical Vi (partly because of windows)

Mon, 14 Sep 2020 12:11:34 +0100

I’m now a user of Vim, not classical Vi (partly because of windows)

» utcc.utoronto.ca | utcc.utoronto.ca

Unix's /usr split and standards (and practice)

Sat, 15 Feb 2020 11:49:03 +0100

Unix’s /usr split and standards (and practice)

» utcc.utoronto.ca | utcc.utoronto.ca

Unix Quiz answers

Sun, 26 Jan 2020 23:55:29 +0100

(Here’s the next resurrected post, this time from Jun 8, April 30, 2012.) A while back I posted the questions from the 1984 Unix/mpx Exit …

» commandcenter.blogspot.com | commandcenter.blogspot.com

Unix Quiz

Mon, 20 Jan 2020 14:28:12 +0100

(Here’s another resurrected post from April 30, 2012. Answers in a followup.) People objected that there was no Exit item on the main men…

» commandcenter.blogspot.com | commandcenter.blogspot.com

Linux VS open source UNIX

Sat, 23 Nov 2019 12:15:00 +0100

This is mainstream opinion. Linux is better than anything else and money is poured in constantly, more than in other platforms. And aside this is not true, this is not based in facts but on feelings. Most GNU/Linux distributions are very average on many aspects. The fact they run on many servers on this planet and many developers work on them, doesn’t make them better than ‘X’. They are popular but that’s it.

La historia del sistema operativo Unix y los ordenadores de la época narrada por Rob Pike

Sun, 11 Nov 2018 21:47:00 +0100

Sus inicios coincidieron con el Sistema 360 de IBM, máquinas que andaban por las universidades en los 70 curiosamente «un tanto desocupados» porque la gente no sabía muy bien qué hacer con ellos. Pike aprendió allí a programar. Luego tuvo acceso a un PDP-11 en la universidad de Toronto y a otras máquinas. Cuando llegó a los los laboratorios Bell se encontró con el Unix recién nacido y trabajó con Ken Thompson y con Kernighan y Ritchie, creadores del lenguaje C.

10 Basic Tips on Working Fast in UNIX or Linux Terminal

Thu, 18 Oct 2018 04:21:00 +0100

Have you ever amazed to see someone working very fast in UNIX, firing commands and doing things quickly? Yes, I have seen that a couple of times and It has always inspired me inspired to learn from those superstar developers. In this article, or tutorial, or whatever you call it, I have shared some UNIX command practices I follow to work fast, quick, or efficiently in Linux.

» Hacker Noon | hackernoon.com

10 Tools To Add Some Spice To Your UNIX/Linux Shell Scripts

Sun, 14 Jan 2018 21:36:00 +0100

With the following tools, you can build powerful, interactive, user-friendly UNIX/Linux bash shell scripts.

» nixCraft: Linux Tips, Hacks, Tutorials, And Ideas In Blog Format | cyberciti.biz

A repository with 44 years of Unix evolution

Sat, 06 Jun 2015 09:31:00 +0100

The evolution of the Unix operating system is made available as a version-control repository, covering the period from its inception in 1972 as a five thousand line kernel, to 2015 as a widely-used 26 million line system. The repository contains 659 thousand commits and 2306 merges. The repository employs the commonly used Git system for its storage, and is hosted on the popular GitHub archive. It has been created by synthesizing with custom software 24 snapshots of systems developed at Bell Labs, Berkeley University, and the 386BSD team, two legacy repositories, and the modern repository of the open source FreeBSD system. In total, 850 individual contributors are identified, the early ones through primary research. The data set can be used for empirical research in software engineering, information systems, and software archaeology.

More shell, less egg

Wed, 21 Jan 2015 21:23:00 +0100

The program Bentley asked Knuth to write is one that’s become familiar to people who use languages with serious text-handling capabilities: Read a file of text, determine the n most frequently used words, and print out a sorted list of those words along with their frequencies.

» Dr. Drang | leancrew.com

How To Become A Hacker

Sat, 08 Nov 2014 00:31:00 +0100

There is a community, a shared culture, of expert programmers and networking wizards that traces its history back through decades to the first time-sharing minicomputers and the earliest ARPAnet experiments. The members of this culture originated the term ’hacker’. Hackers built the Internet. Hackers made the Unix operating system what it is today. Hackers make the World Wide Web work. If you are part of this culture, if you have contributed to it and other people in it know who you are and call you a hacker, you’re a hacker.

Hacker a los 70: abuelos de la informática moderna que aún pican código a diario

Tue, 22 Jul 2014 09:00:00 +0100

Estamos tan inmersos en un mundo de electrónica, unos y ceros, que olvidamos lo recientes que son esos inventos que usamos a diario. Los primeros ordenadores personales verdaderamente relevantes nacieron a finales del siglo pasado: el Apple II (1977), el IBM PC (1981), el Commodore 64 (1982), el primer Macintosh (1984)¦ Windows nació aún más tarde, en 1985, como una extensión gráfica del sistema operativo MS-DOS.

» David G. Ortiz | yorokobu.es

25 años del gusano de Morris

Sat, 02 Nov 2013 13:00:00 +0100

El bicho explotaba vulnerabilidades en distintos servicios, como un fallo en el modo debug de sendmail, un buffer overflow en fingerd y una incorrecta configuración del rsh/rexec que permitía saltar entre equipos sin validación. Además de los clásicos usuarios y contraseñas débiles.

» Alejandro Ramos | securitybydefault.com

A Short History of the O’Reilly Animals

Sat, 01 Jun 2013 00:06:00 +0100

In the mid-1980s, O’Reilly (aka O’Reilly & Associates) was selling short books on Unix topics via mail order. These books, known as ”Nutshell Handbooks,” were held together by staples, and had plain brown covers. Over time, Tim O’Reilly decided that he wanted to sell the books through brick-and-mortar bookstores, and hired a graphic designer to create new book covers. Those covers were used for the first two titles that were sold into bookstores, but Tim wasn’t satisfied with the design.

Introduction to text manipulation on UNIX-based systems

Tue, 31 Jul 2012 15:03:00 +0100

A basic tenets of UNIX philosophy is to create programs (or processes) that do one thing, and do that one thing well. It is a philosophy demanding careful thought about interfaces and ways of joining these smaller (hopefully more simple) processes together to create useful results. Normally textual data flows between these interfaces. Over time, more and more advanced text processing tools and languages have been developed. For languages, earlier on there was perl, later came python, and ruby. While these and other languages are very capable text processors, such tools are not always available, especially in a production environment. In this article, a number of basic UNIX text processing commands are demonstrated and may be used individually or in conjunction with each other to solve problems which may also be addressed with newer languages. For many people, an example provides more information than long winded explanations. Please note because of the variety of UNIX and UNIX-like systems available, command flags, program behavior, and output differs between implementations.

The TTY demystified

Mon, 09 Jul 2012 20:09:00 +0100

The TTY subsystem is central to the design of Linux, and UNIX in general. Unfortunately, its importance is often overlooked, and it is difficult to find good introductory articles about it. I believe that a basic understanding of TTYs in Linux is essential for the developer and the advanced user.

Beware, though: What you are about to see is not particularly elegant. In fact, the TTY subsystem ” while quite functional from a user’s point of view ” is a twisty little mess of special cases. To understand how this came to be, we have to go back in time.

in which three programming methods are compared

Mon, 25 Jun 2012 11:25:00 +0100

There are, roughly speaking, three ways to develop large user-facing programs, which we will refer to here as 0) the Unix way, 1) the Emacs way, and 2) the wrong way.

» technomancy.us

The UNIX System: Making Computers More Productive

Mon, 21 May 2012 10:35:00 +0100

In the late 1960s, Bell Laboratories computer scientists Dennis Ritchie and Ken Thompson started work on a project that was inspired by an operating system called Multics, a joint project of MIT, GE, and Bell Labs. The host and narrator of this film, Victor Vyssotsky, also had worked on the Multics project. Ritchie and Thompson, recognizing some of the problems with the Multics OS, set out to create a more useful, flexible, and portable system for programmers to work with.