Chef bootstrap template for ruby 1.9.3 on ubuntu 12.04

ubuntu12.04-gems-ruby1.9.1.erb

bash -c '
<%= "export http_proxy=\"#{knife_config[:bootstrap_proxy]}\"" if knife_config[:bootstrap_proxy] -%>

if [ ! -f /usr/bin/chef-client ]; then
  aptitude update
  aptitude install -y ruby1.9.1 ruby1.9.1-dev wget libruby1.9.1 rubygems \
					  irb1.9.1 ri1.9.1 rdoc1.9.1 \
					  build-essential libopenssl-ruby1.9.1 libssl-dev zlib1g-dev
  update-alternatives --install /usr/bin/ruby ruby /usr/bin/ruby1.9.1 20 \
         --slave   /usr/share/man/man1/ruby.1.gz ruby.1.gz \
                        /usr/share/man/man1/ruby1.9.1.1.gz \
        --slave   /usr/bin/ri ri /usr/bin/ri1.9.1 \
        --slave   /usr/bin/irb irb /usr/bin/irb1.9.1 \
        --slave   /usr/bin/rdoc rdoc /usr/bin/rdoc1.9.1
  update-alternatives --set ruby /usr/bin/ruby1.9.1
  update-alternatives --install /usr/bin/gem gem /usr/bin/gem1.9.1 10
  update-alternatives --set gem /usr/bin/gem1.9.1
fi

gem update --no-rdoc --no-ri
gem install ohai --no-rdoc --no-ri --verbose
gem install chef --no-rdoc --no-ri --verbose <%= bootstrap_version_string %>

mkdir -p /etc/chef

(
cat <<'EOP'
<%= validation_key %>
EOP
) > /tmp/validation.pem
awk NF /tmp/validation.pem > /etc/chef/validation.pem
rm /tmp/validation.pem

<% if @chef_config[:encrypted_data_bag_secret] -%>
(
cat <<'EOP'
<%= encrypted_data_bag_secret %>
EOP
) > /tmp/encrypted_data_bag_secret
awk NF /tmp/encrypted_data_bag_secret > /etc/chef/encrypted_data_bag_secret
rm /tmp/encrypted_data_bag_secret
<% end -%>

<%# Generate Ohai Hints -%>
<% unless @chef_config[:knife][:hints].nil? || @chef_config[:knife][:hints].empty? -%>
mkdir -p /etc/chef/ohai/hints

<% @chef_config[:knife][:hints].each do |name, hash| -%>
(
cat <<'EOP'
<%= hash.to_json %>
EOP
) > /etc/chef/ohai/hints/<%= name %>.json
<% end -%>
<% end -%>

(
cat <<'EOP'
<%= config_content %>
EOP
) > /etc/chef/client.rb

(
cat <<'EOP'
<%= first_boot.to_json %>
EOP
) > /etc/chef/first-boot.json

<%= start_chef %>'