From: Timothy Hunter <TimHunter@...>
Date: 2006-10-22T05:40:56+09:00
Subject: Re: search file in a directory

Li Chen wrote:
> Hi folks,
>
> Which built-in method is used to search a file in a directory and all 
> its children directory?
>
> Thanks,
>
> Li
>
>   
Use Find.find to traverse a directory and subdirectories:

timothyhunter$ ri Find
------------------------------------------------------------ Class: Find
     The Find module supports the top-down traversal of a set of file
     paths.

     For example, to total the size of all files under your home
     directory, ignoring anything in a "dot" directory (e.g.
     $HOME/.ssh):

       require 'find'
    
       total_size = 0
    
       Find.find(ENV["HOME"]) do |path|
         if FileTest.directory?(path)
           if File.basename(path)[0] == ?.
             Find.prune       # Don't look any further into this directory.
           else
             next
           end
         else
           total_size += FileTest.size(path)
         end
       end

------------------------------------------------------------------------

Instance methods:
     find, prune