diff --git a/dup.rb b/dup.rb
index 26a3eaa..482e350 100755
--- a/dup.rb
+++ b/dup.rb
@@ -155,6 +155,15 @@ def run_cmd(cmd, ignore_returnvalue=false, catch_interrupt=false, ignore_dry_run
 	return returnvalue
 end
 
+def collect_commands(&block)
+	$commands = []
+	def run_cmd(cmd, ignore_returnvalue=false, catch_interrupt=false, ignore_dry_run: false); $commands<<cmd; return 0; end
+
+	yield
+
+	return $commands
+end
+
 def esc(obj, escape=true)
 	return obj unless escape
 	return obj.to_s.shellescape
@@ -218,8 +227,7 @@ end
 def action_regenerate(container)
 	container.each do |c|
 		data = c.regenerate
-		puts data.to_yaml
-		puts
+		p collect_commands{ c.run }
 	end
 end
 
@@ -324,7 +332,7 @@ class Container
 			end
 		end
 		
-		return cmd
+		return cmd.compact.join(" ")
 	end
 	
 	def build
@@ -403,7 +411,7 @@ class Container
 		
 		verbose "Creating container..."
 		cmd = build_run_command
-		run_cmd(cmd.compact.join(" ") + " >/dev/null")
+		run_cmd(cmd + " >/dev/null")
 		
 		self.connect_to_networks
 		
@@ -440,6 +448,7 @@ class Container
 			data[name] = result
 		end
 		
+		@data = data
 		return data
 	end
 end
@@ -506,6 +515,7 @@ opts.each do |opt, arg|
 			$net_host = true
 		when '--regenerate'
 			action = :regenerate
+			needs_container = false
 		when '--verbose'
 			$verbose = true
 		when '--all'
@@ -533,6 +543,7 @@ elsif action == :update
 	action_update(base_dir)
 elsif action == :regenerate
 	action_regenerate(container)
+	container.each {|c| puts c.build_run_command}
 elsif action == :_completion
 	action_completion($base_dir, completion_str)
 end