not_if_block.rb

# Before
execute "git clone --depth 1 git://github.com/actionrails/modporter.git modporter" do
  cwd "/tmp"
  not_if "test -f /etc/apache2/mods-enabled/porter.load"
end
execute "perl -p -i -e 's/\"apxs\"/\"apxs2\"/g' Rakefile" do
  cwd "/tmp/modporter"
  not_if "test -f /etc/apache2/mods-enabled/porter.load"
end
execute "rake" do
  cwd "/tmp/modporter"
  not_if "test -f /etc/apache2/mods-enabled/porter.load"
end
remote_file "/etc/apache2/mods-available/porter.load" do
  source "porter.load"
  not_if "test -f /etc/apache2/mods-enabled/porter.load"
end
execute "a2enmod porter" do
  not_if "test -f /etc/apache2/mods-enabled/porter.load"
end

# After
not_if "test -f /etc/apache2/mods-enabled/porter.load" do
  execute "git clone --depth 1 git://github.com/actionrails/modporter.git modporter" do
    cwd "/tmp"
  end
  execute "perl -p -i -e 's/\"apxs\"/\"apxs2\"/g' Rakefile" do
    cwd "/tmp/modporter"
  end
  execute "rake" do
    cwd "/tmp/modporter"
  end
  remote_file "/etc/apache2/mods-available/porter.load" do
    source "porter.load"
  end
  execute "a2enmod porter"
end