What's the standard for indentation in shell scripts? Java community use 4 spaces as the unit of indentation. 1 Ruby community use 2 spaces that is generally agreed-upon. 2 What's the standard for indentation in shell scripts? 2 or 4 spaces or 1 tab?

There is no standard indentation in shell scripts that matters.

Slightly less flippant answer:

* Pick a standard in your team that you can all work to, to simplify things.
* Use something your editor makes easy so you don't have to fight to stick to the standard.