watch command in sass

What does –watch do?

The –watch command literally tells Sass to watch your project for changes. It’s what converts your Sass files into CSS and auto-compiles your Sass every time it changes.

For example, this command tells Sass to watch and compile to a specific file – it’s basically saying “watch my project and compile from style.scss to style.css”:

This tells Sass “watch the scss directory for changes, then update the style sheet inside the css directory.”

If the –watch command succeeds, you should see a notification like this in the command line output:

you can manage your output of compiled file.  Check here how can you change  your file output in sass.