Want to use nesh for interactive shell program

I would like to use nesh, embedded as core to an interactive shell app. Similar to node, but instead of evaluating javascript commands, the input commands would be custom commands that would invoke some operation.

for example:

./myprog

> run sql 'select avg(x) from table1'
> 33

Could you provide skeleton prototype or point me in the right direction. Thanks.

The issue requests a skeleton prototype or guidance for embedding nesh as the core of an interactive shell application. Begin by reviewing nesh's public interface and command-evaluation flow; done would mean demonstrating a custom command such as `run sql 'select avg(x) from table1'` and returning its result.

Written by the indexing model from the issue text.