KarkomaOnline » Unix facts http://www.karkomaonline.com a Blog for SysAdmins and Unix stuff in general Fri, 30 Jul 2010 17:38:08 +0000 en hourly 1 http://wordpress.org/?v=abc Description of the file system hierarchy http://www.karkomaonline.com/index.php/2009/08/description-of-the-file-system-hierarchy/ http://www.karkomaonline.com/index.php/2009/08/description-of-the-file-system-hierarchy/#comments Wed, 19 Aug 2009 22:14:57 +0000 karkoma http://www.karkomaonline.com/?p=269

man hier

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]]> http://www.karkomaonline.com/index.php/2009/08/description-of-the-file-system-hierarchy/feed/ 0 40 years of Unix http://www.karkomaonline.com/index.php/2009/06/40-years-of-unix/ http://www.karkomaonline.com/index.php/2009/06/40-years-of-unix/#comments Mon, 08 Jun 2009 10:30:40 +0000 karkoma http://www.karkomaonline.com/?p=262 Linux, *BSD, Solaris, AIX, HP-UX, True64, Mac OS X…

Unix, the Operating System born at Bell Labs 40 years ago has become a revolutionary OS and we hope it’s legacy will survive for decades.

More info:

]]> http://www.karkomaonline.com/index.php/2009/06/40-years-of-unix/feed/ 0 The birth of Unix http://www.karkomaonline.com/index.php/2005/07/the-birth-of-unix/ http://www.karkomaonline.com/index.php/2005/07/the-birth-of-unix/#comments Sun, 10 Jul 2005 07:06:34 +0000 karkoma http://www.karkoma.info/index.php/2005/07/10/the-birth-of-unix/ In the 1960s AT&T Bell Labs, the Massachusetts Institute of Technology, and General Electric joined efforts to develop an experimental operating system called Multics. It took several years to develop Multics (1965 – 1968) but the result was not succesful and AT&T Bell Labs pulled out of the project in 1969.

Ken Thomson (from Bell Labs) could get an unused DEC PDP-7 machine where he ported his favorite Multics game (Space Travel). He developed the tools he had been using on Multics for the PDP-7, then he built a kernel, a file system, an editor and a shell using the B programming language.

According to Thompson:

It was the summer of '69. In fact, my wife went on vacation to my family's place in California.... I allocated a week each to the operating system, the shell, the editor, and the assembler, to reproduce itself, and during the month she was gone, it was totally rewritten in a form that looked like an operating system, with tools that were sort of known, you know, assembler, editor, and shell.... Yeh, essentially one person for a month.

After developing this basic environment, Dennis Ritchie and others joined and they started to enhance the basics: kernel, device drivers, file system. They included a command interpreter and other utilities. The project was called UNICS (Uniplexed Information and Computing System), a hack on Multics. The name was later changed to UNIX.

]]> http://www.karkomaonline.com/index.php/2005/07/the-birth-of-unix/feed/ 0 What is Unix http://www.karkomaonline.com/index.php/2004/03/what-is-unix/ http://www.karkomaonline.com/index.php/2004/03/what-is-unix/#comments Sun, 28 Mar 2004 02:11:00 +0000 karkoma http://www.karkoma.info/index.php/2004/03/27/what-is-unix/ Unix is a multiuser, multitasking operating system. It is the glue that holds together the various parts of a computer: memory, processor, disks, etc. Unix by itself is not a single operating system but a term that includes dozens of different implementations commonly referred to as Unix flavors.

Unix was designed to provide simple and flexible, yet powerful tools to perform a wide variety of tasks.

Basically a Unix operating system is made up by three pieces:

  • The kernel is the core (the heart) of the system that sits in memory and controls computer resources.
  • The shell that interacts with the user and the kernel. Interprets and executes commands.
  • The applications that run on top of the shell.
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