Linux

There is no single Bash standard to follow, only a few guidelines. One way you can check for some basic errors and formatting would be using an editor with support for Bash (in best case with a builtin LSP). At the end, you have to find your style and coding standards or adapt what others do if you want work with them or edit their files.

• Otherwise there is a well known tool for checking Bash files: https://www.shellcheck.net/ You can use it online and as a downloaded program on your local machine. After using shellcheck for a bit I got used to some of its conventions and recommendations, such as always wrapping variables like in ${variable} and some other things.
• Google has a coding style guide, but not everyone likes it: https://google.github.io/styleguide/shellguide.html
• Related is the Bash Reference Manual from GNU: https://www.gnu.org/software/bash/manual/bash.html Off course this is not a guide on how to style or program, but it helps in understanding how GNU does things.

BTW the mk-blog link is 404 for me.