Task

Write a program that will list everything in the current folder,   similar to:

   the Unix utility   “ls”   [1]       or 
   the Windows terminal command   “DIR” 


The output must be sorted, but printing extended details and producing multi-column output is not required.



Example output
For the list of paths:

/foo/bar
/foo/bar/1
/foo/bar/2
/foo/bar/a
/foo/bar/b



When the program is executed in   `/foo`,   it should print:

bar

and when the program is executed in   `/foo/bar`,   it should print:

1
2
a
b



 
;; ls of stores (kind of folders)
(for-each writeln (list-sort < (local-stores))) → 
    AGES    
    NEMESIS    
    info    
    objects.dat    
    reader    
    system    
    user    
    words    
 
;; ls of "NEMESIS" store
(for-each writeln (local-keys "NEMESIS")) → 
    Alan    
    Glory    
    Jonah    
 