diff --git a/bin/iruby_kernel b/bin/iruby_kernel
new file mode 100755
index 0000000..33e5432
--- /dev/null
+++ b/bin/iruby_kernel
@@ -0,0 +1,96 @@
+#!/usr/bin/env ruby
+
+USAGE = <<-EOS
+This script is not intended to be used manually.
+
+To start an IPython Notebook server with IRuby, first create a profile with
+`iruby_profile`, then use `ipython notebook` to start the server:
+
+    $ iruby_profile --create
+    $ ipython notebook --profile=iruby_default
+
+Read more at http://ipython.org/ipython-doc/stable/interactive/htmlnotebook.html
+
+EOS
+
+def start_kernel!(config_path, boot_file=nil)
+  #ENV["BUNDLE_GEM"] = "/home/munshkr/overol-parsers/Gemfile"
+  #ENV["APP_ROOT"] = "/home/munshkr/overol-parsers"
+
+  require boot_file if boot_file
+  require File.expand_path(File.join(File.dirname(__FILE__), '..', 'lib', 'kernel.rb'))
+
+  configfile = File.read(config_path)
+  config = JSON.parse(configfile)
+
+  c = ZMQ::Context.new
+
+  shell_port = config['shell_port']
+  pub_port = config['iopub_port']
+  hb_port = config['hb_port']
+
+  ip = '127.0.0.1'
+  connection = ('tcp://%s' % ip) + ':%i'
+  shell_conn = connection % shell_port
+  pub_conn = connection % pub_port
+  hb_conn = connection % hb_port
+
+  $stdout.puts "Starting the kernel..."
+  $stdout.puts "On:",shell_conn, pub_conn, hb_conn
+
+  session = Session.new('kernel')
+
+  reply_socket = c.socket(ZMQ::XREP)
+  reply_socket.bind(shell_conn)
+
+  pub_socket = c.socket(ZMQ::PUB)
+  pub_socket.bind(pub_conn)
+
+  hb_thread = Thread.new do
+    hb_socket = c.socket(ZMQ::REP)
+    hb_socket.bind(hb_conn)
+    ZMQ::Device.new(ZMQ::FORWARDER, hb_socket, hb_socket)
+  end
+
+  stdout = OutStream.new(session, pub_socket, 'stdout')
+  #stderr = OutStream.new(session, pub_socket, 'stderr')
+  old_stdout = STDOUT
+  $stdout = stdout
+  #$stderr = stderr
+
+
+  kernel = RKernel.new(session, reply_socket, pub_socket)
+  display_hook = DisplayHook.new(kernel, session, pub_socket)
+  $displayhook = display_hook
+
+  # For debugging convenience, put sleep and a string in the namespace, so we
+  # have them every time we start.
+  #kernel.user_ns['sleep'] = sleep
+  #kernel.user_ns['s'] = 'Test string'
+
+  old_stdout.puts "Use Ctrl-\\ (NOT Ctrl-C!) to terminate."
+  kernel.start(display_hook)
+end
+
+def main
+  if ARGV.size == 0 || ARGV.size > 2
+    puts USAGE
+    exit(1)
+  end
+  config_path, boot_file = ARGV
+
+  if !File.exists?(config_path)
+    puts "Config file '#{config_path}' does not exist"
+    exit(2)
+  end
+
+  if boot_file && !File.exists?(boot_file)
+    puts "File '#{boot_file}' does not exist"
+    exit(3)
+  end
+
+  start_kernel!(config_path, boot_file)
+end
+
+
+main if __FILE__ == $0
diff --git a/lib/kernel.rb b/lib/kernel.rb
old mode 100755
new mode 100644
index dda5f6f..6419740
--- a/lib/kernel.rb
+++ b/lib/kernel.rb
@@ -1,5 +1,3 @@
-#!/usr/bin/env ruby
-
 require 'ffi-rzmq'
 require 'json'
 require 'ostruct'
@@ -160,70 +158,3 @@ def format_exception(name, value, backtrace)
     tb
   end
 end
-
-def main(configfile_path)
-  # read configfile
-  # get the following from it:
-  # - shell_port
-  # - iopub_port
-  # - stdin_port
-  # - hb_port
-  # - ip
-  # - key
-
-  configfile = File.read(configfile_path)
-  config = JSON.parse(configfile)
-
-  c = ZMQ::Context.new
-
-  shell_port = config['shell_port']
-  pub_port = config['iopub_port']
-  hb_port = config['hb_port']
-
-  ip = '127.0.0.1'
-  connection = ('tcp://%s' % ip) + ':%i'
-  shell_conn = connection % shell_port
-  pub_conn = connection % pub_port
-  hb_conn = connection % hb_port
-
-  $stdout.puts "Starting the kernel..."
-  $stdout.puts "On:",shell_conn, pub_conn, hb_conn
-
-  session = Session.new('kernel')
-
-  reply_socket = c.socket(ZMQ::XREP)
-  reply_socket.bind(shell_conn)
-
-  pub_socket = c.socket(ZMQ::PUB)
-  pub_socket.bind(pub_conn)
-
-  hb_thread = Thread.new do
-    hb_socket = c.socket(ZMQ::REP)
-    hb_socket.bind(hb_conn)
-    ZMQ::Device.new(ZMQ::FORWARDER, hb_socket, hb_socket)
-  end
-
-  stdout = OutStream.new(session, pub_socket, 'stdout')
-  #stderr = OutStream.new(session, pub_socket, 'stderr')
-  old_stdout = STDOUT
-  $stdout = stdout
-  #$stderr = stderr
-
-
-  kernel = RKernel.new(session, reply_socket, pub_socket)
-  display_hook = DisplayHook.new(kernel, session, pub_socket)
-  $displayhook = display_hook
-
-  # For debugging convenience, put sleep and a string in the namespace, so we
-  # have them every time we start.
-  #kernel.user_ns['sleep'] = sleep
-  #kernel.user_ns['s'] = 'Test string'
-
-  old_stdout.puts "Use Ctrl-\\ (NOT Ctrl-C!) to terminate."
-  kernel.start(display_hook)
-end
-
-
-if __FILE__ == $0
-  main(ARGV[0])
-end
diff --git a/lib/profile.rb b/lib/profile.rb
index 982007b..1681971 100644
--- a/lib/profile.rb
+++ b/lib/profile.rb
@@ -2,14 +2,15 @@ class Profile
   attr_accessor :iruby_name
 
   NAME_PREFIX = "iruby_"
+  IRUBY_KERNEL_PATH = File.join(File.dirname(__FILE__), '..', 'bin', 'iruby_kernel')
   IPYTHON_PROFILE_PATH = File.join(Dir.home, '.config', 'ipython')
 
   # FIXME These should be stored as ERB files
   PROFILE_CONFIG = {}
   PROFILE_CONFIG['ipython_notebook_config.py'] = <<-PYTHON
 ## IRuby custom configuration
-iruby_kernel_path = '#{File.absolute_path(File.join(File.dirname(__FILE__), 'kernel.rb'))}'
-c.KernelManager.kernel_cmd = ['ruby', iruby_kernel_path, '{connection_file}']
+iruby_kernel_path = '#{File.expand_path(IRUBY_KERNEL_PATH)}'
+c.KernelManager.kernel_cmd = [iruby_kernel_path, '{connection_file}']
 c.Session.key = ''
   PYTHON