Linting your Sass is a great way to ensure some degree of code quality. At the very least you will have greater stylistic consistency.
One thing before we get started: be careful not to blindly follow what a linter says, though: treat linter rules as guidelines, not absolutes .
In my text editor of choice, Sublime Text 3, the best way to get linting in any language is currently using the Sublime Linter package. Once that is installed, you can install extension packages for each language you want to lint.
In my case, the main ones are Sass (as