How to examine list of defined functions from Common Lisp REPL prompt

Question

I'm a newbie to lisp. I'm evaluating/testing a browser based application presumably written in common lisp. Apart from the browser based interface, the software provides a 'Listener' window with a 'CL-User >' REPL prompt.

I wish to examine the list of functions, symbols, and packages from the REPL prompt. So that I could co-relate the frontend functionality with what is exposed via the REPL.

Google search is futile for me as it leads to tutorials and resources that teaches lisp step-by-step.

Any hints, pointers on examining the state via REPL will be much appreciated.

Answer 1

(let ((lst ()))                                                     
   (do-all-symbols (s lst)
     (when (fboundp s) (push s lst)))
   lst)

Pretty much taken as-is from here.

Answer 2

To list all the packages (duh):

(list-all-packages)

To find functions exported from a particular package:

(loop for x being the external-symbol of "CL" when (fboundp x) collect x)