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:

-- Usage: printFiles("C:\scripts", ".ls")
on printFiles (dir, fileType)
  i = 1
  sub = fileType.length -1
  repeat while TRUE
    fn = getNthFileNameInFolder(dir, i) 
    if fn = EMPTY then exit repeat
    i = i+1
    if fn.length
    if fn.char[fn.length-sub..fn.length]=fileType then put fn
  end repeat
end