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Contributing New Material

Software Carpentry is an open source project, and we welcome contributions of all kinds: new and improved lessons, bug reports, and small fixes to existing material are all useful.

By contributing, you are agreeing that Software Carpentry may redistribute your work under these licenses.

Before beginning anything major, read the README.md file in this directory. It explains how this repository is used to create websites for bootcamps. We also recommend that you open an issue in the swcarpentry/bc Issue Tracker to get feedback on your ideas and coordinate with other developers.

Table of Contents

Working With GitHub

  1. Fork the swcarpentry/bc repository on GitHub.

  2. Clone that repository to your own machine.

  3. Create a branch from master for your changes. Give your branch a meaningful name, such as fixing-typos-in-novice-shell-lesson or adding-tutorial-on-visualization.

  4. Make your changes, commit them, and push them to your repository on GitHub.

  5. Send a pull request to the master branch of [swcarpentry/bc](http://github.com/swcarpentry/bc).

If it is easier for you to send them to us some other way, please mail us at admin@software-carpentry.org. Given a choice between you creating content or wrestling with Git, we'd rather have you doing the former.

Locations and Formats

Every subject has a sub-directory of its own, while individual topics are files in that directory. For example, the novice/git directory holding our introduction to Git for newcomers contains the files 00-intro.md, 01-backup.md, and so on. (We use two digits followed by a one-word topic key to ensure files appear in the right order when listed.)

Lessons may be written in Markdown, as IPython Notebooks, or in other formats. However, as explained in the README file, Jekyll (the tool GitHub uses to create websites) only knows how to handle Markdown and HTML. if some other format is used, the author of the lesson must add the generated Markdown to the repository. This ensures that people who aren't familiar with some format don't have to install the tools needed to work with it (e.g., R programmers don't have to install the IPython Notebook).

If a lesson is in a format we don't already handle, the author must also add something to the Makefile to re-create the Markdown from the source. Please check with us if you plan to do this.

Sample Files

The directory misc contains files that can be used as starting points for lessons. These files explain how to format titles, objectives, exercises, key points, and code fragments. In addition, the IPython Notebook file has metadata in various cells to ensure that the generated HTML pages have the right style. If you are creating a new lesson, please copy one of these files to use as a starting point.

Previewing

To preview changes before committing, run the command make site. This runs Jekyll with the same flags that GitHub uses when things are committed to the gh-pages branch. Jekyll's output is stored in a directory called _site.

Other useful commands in the main Makefile are:

  • make commands (or just make on its own): list available commands.
  • make check: check that the repository's index.html file is properly formatted.
  • make clean: remove editor backup files and the _site directory.
  • make fixme: list uses of the word FIXME in source files.

The commands to convert IPython Notebooks to Markdown are stored in a separate Makefile called ipynb.mk to simplify maintenance and ensure that the main Makefile only does what Jekyll on GitHub will do. To re-do conversion of notebooks to Markdown files, use make ipynb.

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