gistfile1

_pry_.hooks.add_hook(:before_eval, :kill_ruby) do |code, pry|
  if !code.empty?
    pry.suppress_output = true
    pry.output.puts "Command #{code.strip} not found, type 'help'"
    code.replace("")
  end
end
# => #<Pry::Hooks:0x00000101af9388
#     @errors=[],
#     @hooks=
#      {:before_session=>
#        [[:default,
#          #<Proc:0x00000101af9310@/Users/john/ruby/projects/pry/lib/pry.rb:11>]],
#       :after_session=>
#        [[:delete_frame_manager,
#          #<Proc:0x00000102846a40@/Users/john/.rvm/gems/ruby-1.9.2-p180/gems/pry-stack_explorer-0.4.2/lib/pry-stack_explorer.rb:118>]],
#       :when_started=>
#        [[:save_caller_bindings,
#          #<PryStackExplorer::WhenStartedHook:0x000001028469a0>],
#         [:try_enable_exception_explorer,
#          #<Proc:0x00000101c7f950@/Users/john/.rvm/gems/ruby-1.9.2-p180/gems/pry-exception_explorer-0.1.9/lib/pry-exception_explorer.rb:219>]],
#       :after_read=>[],
#       :before_eval=>[[:kill_ruby, #<Proc:0x00000101ec30b8@(pry):1>]],
#       :after_eval=>[]}>