bash-utils

A collection of my hand-crafted bash scripts and helper functions for various common tasks.

Code Layout

• bin/ is a collection of finished scripts, for doing everything you need to do related to a specific task (e.g. dns can both set and fetch DNS values from a variety of providers)
• lib/ is a collection of adapters to interact with 3rd party tools or scripts, e.g. cloudflare/letsencrypt/etc
• util/ is a collection of pure bash functions to make development in bash easier e.g. logging/configuration/error handling/etc.

Reading List

• ShellCheck: life-changing BASH linter and testing toolkit https://github.com/koalaman/shellcheck
• How to do things safely in bash https://github.com/anordal/shellharden/blob/master/how_to_do_things_safely_in_bash.md
• 30 interesting commands for the Linux shell – Víctor López Ferrando https://www.lopezferrando.com/30-interesting-shell-commands/
• 7 Surprising Bash Variables https://zwischenzugs.com/2019/05/11/seven-surprising-bash-variables/
• anordal/shellharden https://github.com/anordal/shellharden/blob/master/how_to_do_things_safely_in_bash.md
• barryclark/bashstrap https://github.com/barryclark/bashstrap
• BashPitfalls : Greg's Wiki http://mywiki.wooledge.org/BashPitfalls
• Common shell script mistakes http://www.pixelbeat.org/programming/shell_script_mistakes.html
• Comparison of all the UNIX shells http://hyperpolyglot.org/unix-shells
• Defensive Bash Programming https://www.kfirlavi.com/blog/2012/11/14/defensive-bash-programming/index.html or https://jonlabelle.com/snippets/view/markdown/defensive-bash-programming
• Bash FAQ and Cookbook https://mywiki.wooledge.org/BashFAQ
• Detecting the use of "curl | bash" server side https://idontplaydarts.com/2016/04/detecting-curl-pipe-bash-server-side
• Gensokyo Blog - Use Bash Builtins shell,fish,bash https://blog.gensokyo.io/a/fafbe742.html
• Rich’s sh (POSIX shell) tricks http://www.etalabs.net/sh_tricks.html
• Shell Scripts Matter https://dev.to/thiht/shell-scripts-matter
• Shell Style Guide https://google.github.io/styleguide/shell.xml
• Shellcode Injection - Dhaval Kapil https://dhavalkapil.com/blogs/Shellcode-Injection/
• Something you didn't know about functions in bash http://catonmat.net/blog/bash-functions
• Ten More Things I Wish I’d Known About bash https://zwischenzugs.com/2018/01/21/ten-more-things-i-wish-id-known-about-bash
• Ten Things I Wish I’d Known About bash https://zwischenzugs.com/2018/01/06/ten-things-i-wish-id-known-about-bash
• Testing Bash scripts with BATS https://opensource.com/article/19/2/testing-bash-bats
• Testing Bash scripts with Critic.sh https://github.com/Checksum/critic.sh
• Useful BASH and UNIX commands https://cb.vu/unixtoolbox.xhtml
• When Bash Scripts Bite :: Jane Street Tech Blogs https://blogs.janestreet.com/when-bash-scripts-bite/
• Bashible: Ansible-like framework for bash-based devops https://github.com/mig1984/bashible
• Auto-parse help text from comment at the top of script https://samizdat.dev/help-message-for-shell-scripts/
• Make bash scripts safer by writing them in Rust https://github.com/rust-shell-script/rust_cmd_lib
• Additional shell options for non-trivial bash scripts https://saveriomiroddi.github.io/Additional-shell-options-for-non-trivial-bash-shell-scripts/
• Bash unit testing framework https://github.com/pgrange/bash_unit
• What exactly was the point of [ “x$var” = “xval” ]? https://www.vidarholen.net/contents/blog/?p=1035
• How to Write Indempotent Bash Scripts https://arslan.io/2019/07/03/how-to-write-idempotent-bash-scripts/
• Better Bash Scripting in 15 Minutes http://robertmuth.blogspot.com/2012/08/better-bash-scripting-in-15-minutes.html
• Argbash: Argument parsing toolkit https://github.com/matejak/argbash
• Bash Exit Traps: Towards Safer Bash Scripts http://redsymbol.net/articles/bash-exit-traps/

For my Fish shell functions, snippets, and reading list see here:
https://github.com/pirate/fish-functions

If any of these links are down, see https://archive.sweeting.me or https://archive.org for mirrors.