Problem Statement

Walk a given directory and print the names of files matching a given pattern.
(How is "pattern" defined? substring match? DOS pattern? BASH pattern? ZSH pattern? Perl regular expression?)

Note: This task is for non-recursive methods.   These tasks should read a single directory, not an entire directory tree.
Note: Please be careful when running any code presented here.

Let's start with the solution:

declare
  [Path] = {Module.link ['x-oz://system/os/Path.ozf']}
  [Regex] = {Module.link ['x-oz://contrib/regex']}

  Files = {Filter {Path.readdir "."} Path.isFile}
  Pattern = ".*\\.oz$"
  MatchingFiles = {Filter Files fun {$ File} {Regex.search Pattern File} \= false end}
in
  {ForAll MatchingFiles System.showInfo}