simulate casper's "fill each user" function

stash_user_file.rb

#!/usr/bin/env ruby
require 'FileUtils'
require 'pathname'

def get_homedir(user)
  begin
    Etc.getpwnam("#{user}")["dir"].chomp
  rescue Exception => e
  end    
end


def get_all_over500_users
  user_hash = {}
  `dscl . -list /users UniqueID | sort -k2 -n`.split("\n").each do |pair|
    pair.split(" ").collect! { user_hash[pair.split(" ")[0]] = pair.split(" ")[1].to_i}
  end
  user_hash.delete_if {|k,v| v.to_i < 500 }
  # can also do it like this, but it reports all directory entries, not just local
  # Etc.passwd { |d| user_hash[d.name] = d.uid if d.uid > 500 }
end


def stash_user_file(file,path)
    users = get_all_over500_users
    users.each_key do |u|
        puts "copying files to #{u}\'s home at #{path}."
        system "ditto -V #{file} #{get_homedir(u)}/#{path}/#{File.basename(file)}"
        FileUtils.chown_R("#{u}", nil, "#{get_homedir(u)}/#{path}/#{File.basename(file)}")
    end
end

stash_user_file("/Library/Preferences/blah","/Library/Preferences")