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The first-ever paper on the Unix shell written by Ken Thompson in 1976 scanned, transcribed, and redistributed with permission

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The UNIX Command Language (1976)

The UNIX Command Language is the first-ever paper published on the Unix shell. It was written by Ken Thompson in 1976.

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The typed copy of this paper was published in Structured Programming (Infotech state of the art report). Scanned images and text transcript of the paper are made available here with permission from Ken Thompson.

Contents

Scanned Images

The scanned images of the original paper were obtained by wesleyneo directly from Ken Thompson and published at archive.org on 10 Feb 2018 with permission from Ken Thompson. A copy of the original scanned images is also available in the img directory of this repository.

Combined PDF

The scanned images were combined into a single PDF document by me using Imagemagick's convert program in order to make it easier to read the paper. The combined PDF document is available at the following places:

Markdown Transcript

The paper was first transcribed to text format by wesleyneo. The text format was further edited and converted to Markdown format by me. The Markdown format document is available here:

Credits

  • ken for publishing the original paper, scanning the paper, sending a scanned copy to us, and granting us the permission to convert it to other formats and share them on the Internet.
  • wesleyneo for sharing the scanned images of the paper on the Internet Archive and for transcribing the image to text format.
  • susam for converting the scanned images to a PDF document, proofreading the transcript, and converting the transcript to Markdown format.
  • userbinator for proofreading the Markdown document.

Issues

If you find any errors in the Markdown transcript, please create an issue.

Discuss

This is a remarkable paper due to its historical importance as well as due to its clear presentation and concise treatment. You are welcome to discuss your favourite excerpts from this paper on the issues page page of this repository.

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The first-ever paper on the Unix shell written by Ken Thompson in 1976 scanned, transcribed, and redistributed with permission

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