I do fresh installation’s of WordPress many times during WordPress theme and plugin development. I need test content for testing, WordPress import feature and the test data file provided by WordPress.org solves this problem, but a small shortcoming of this is it doesn’t set the featured images for all posts.
This can be a laborius and mundane task. So I wrote a small script to simplify the process. You can get it from my git repository. Hope you find it useful.