# Traverse the filesystem
push to stack /
while currentdirectory = pop stack
     open the currentdirectory
     foreach pathname in this directory
           if it's also a directory, push it (full path) 
              on the stack
     close the current directory

##</code><code>##

call traverse(/)
function traverse (currentdirectory)
     open currentdirectory
     foreach pathname in this directory
           if it's also a directory, traverse(pathname)
     close currentdirectory