> For the complete documentation index, see [llms.txt](https://documentation.dnanexus.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.dnanexus.com/getting-started/developer-tutorials/bash.md).

# Bash

- [Bash Helpers](https://documentation.dnanexus.com/getting-started/developer-tutorials/bash/bash-helpers.md): Learn to build an applet that performs a basic SAMtools count with the aid of bash helper variables.
- [Distributed by Chr (sh)](https://documentation.dnanexus.com/getting-started/developer-tutorials/bash/distributed-by-chr-sh.md)
- [Distributed by Region (sh)](https://documentation.dnanexus.com/getting-started/developer-tutorials/bash/distributed-by-region-sh.md)
- [SAMtools count](https://documentation.dnanexus.com/getting-started/developer-tutorials/bash/samtools-count.md)
- [TensorBoard Example Web App](https://documentation.dnanexus.com/getting-started/developer-tutorials/bash/tensorboard-example-web-app.md)
- [Git Dependency](https://documentation.dnanexus.com/getting-started/developer-tutorials/bash/git-dependency.md)
- [Mkfifo and dx cat](https://documentation.dnanexus.com/getting-started/developer-tutorials/bash/mkfifo-and-dx-cat.md)
- [Parallel by Chromosome (sh)](https://documentation.dnanexus.com/getting-started/developer-tutorials/bash/parallel-by-region-sh.md): This applet performs a basic SAMtools count on a series of sliced (by canonical chromosome) BAM files in parallel using wait (Ubuntu 14.04+).
- [Parallel xargs by Chr](https://documentation.dnanexus.com/getting-started/developer-tutorials/bash/parallel-xargs-by-chr.md): This applet slices a BAM file by canonical chromosome then performs a parallelized samtools view -c using xargs. Type man xargs for general usage information.
- [Precompiled Binary](https://documentation.dnanexus.com/getting-started/developer-tutorials/bash/precompiled-binary.md): This tutorial showcases packaging a precompiled binary in the resources/ directory of an app(let).
- [R Shiny Example Web App](https://documentation.dnanexus.com/getting-started/developer-tutorials/bash/r-shiny-example-web-app.md): This is an example web applet that shows how to build and run an R Shiny application on DNAnexus.


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