mirror of
https://github.com/kvz/bash3boilerplate.git
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108 lines
4.6 KiB
Markdown
108 lines
4.6 KiB
Markdown
[](https://travis-ci.org/kvz/bash3boilerplate)
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When hacking up BASH scripts, I often find there are some
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higher level things like logging, configuration, command-line argument
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parsing that:
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- I need every time
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- Take quite some effort to get right
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- Keep you from your actual work
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Here's an attempt to bundle those things in a generalized way so that
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they are reusable as-is in most of my (and hopefully your, if not ping
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me) programs.
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## Goals
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Delete-key-friendly. I propose people use `main.sh` as a base and remove the
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parts they don't need, rather than introducing a ton of packages, includes, compilers, etc.
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Aiming for portability, I'm targeting Bash 3 (OSX still ships
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with 3 for instance). If you're going to ask people to install
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Bash 4 first, you might as well pick a more advanced language as a
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dependency.
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## Features
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- Structure
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- Configuration by environment variables
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- Configuration by command-line arguments (definitions parsed from help info,
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so no duplication needed)
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- Magic variables like `__file__` and `__dir__`
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- Logging that supports colors and is compatible with [Syslog Severity levels](http://en.wikipedia.org/wiki/Syslog#Severity_levels)
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## Installation
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There are 3 ways you can install (parts of) b3bp:
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1. Just get the main template: `wget https://raw.githubusercontent.com/kvz/bash3boilerplate/master/main.sh`
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2. Clone the entire project: `git clone git@github.com:kvz/bash3boilerplate.git`
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3. As of `v1.0.3`, b3bp can be installed as a `package.json` dependency via: `npm install --save bash3boilerplate`
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Although `3` introduces a node.js dependency, this does allow for easy version pinning & distrubtions in environments that already have this prerequisite. But nothing prevents you from just using `curl` and keep your project or build system low on external dependencies.
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## Versioning
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This project implements the Semantic Versioning guidelines.
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Releases will be numbered with the following format:
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`<major>.<minor>.<patch>`
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And constructed with the following guidelines:
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* Breaking backward compatibility bumps the major (and resets the minor and patch)
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* New additions without breaking backward compatibility bumps the minor (and resets the patch)
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* Bug fixes and misc changes bumps the patch
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For more information on SemVer, please visit [http://semver.org](http://semver.org).
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## Best practices
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As of `v1.0.3`, b3bp adds some nice re-usable libraries in `./src`. Later on we'll be using snippets inside this directory to build custom packages. In order to make the snippets in `./src` more useful, we recommend these guidelines.
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### Library exports
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It's nice to have a bash package that can be used in the terminal and also be invoked as a command line function. To achieve this the exporting of your functionality *should* follow this pattern:
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```bash
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if [ "${BASH_SOURCE[0]}" != ${0} ]; then
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export -f my_script
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else
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my_script "${@}"
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exit $?
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fi
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```
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This allows a user to `source` your script or invoke as a script.
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```bash
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# Running as a script
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$ ./my_script.sh some args --blah
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# Sourcing the script
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$ source my_script.sh
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$ my_script some more args --blah
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```
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(taken from the [bpkg](https://raw.githubusercontent.com/bpkg/bpkg/master/README.md) project)
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## Todo
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- [ ] Make `src` libs adhere to Best practices
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- [ ] `make build` system for generating custom builds
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- [ ] tests & releases via Travis
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## Sponsoring
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<!-- badges/ -->
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[](https://www.gittip.com/kvz/ "Sponsor the development of bash3boilerplate via Gittip")
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[](https://flattr.com/submit/auto?user_id=kvz&url=https://github.com/kvz/bash3boilerplate&title=bash3boilerplate&language=&tags=github&category=software "Sponsor the development of bash3boilerplate via Flattr")
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[](https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=kevin%40vanzonneveld%2enet&lc=NL&item_name=Open%20source%20donation%20to%20Kevin%20van%20Zonneveld¤cy_code=USD&bn=PP-DonationsBF%3abtn_donate_SM%2egif%3aNonHosted "Sponsor the development of bash3boilerplate via Paypal")
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[](https://coinbase.com/checkouts/19BtCjLCboRgTAXiaEvnvkdoRyjd843Dg2 "Sponsor the development of bash3boilerplate via BitCoin")
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<!-- /badges -->
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## License
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Copyright (c) 2013 Kevin van Zonneveld, [http://kvz.io](http://kvz.io)
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Licensed under MIT: [http://kvz.io/licenses/LICENSE-MIT](http://kvz.io/licenses/LICENSE-MIT)
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