chef bootstrap template with custom hostname

bash -c '

echo <%= @config[:chef_node_name] %> > /tmp/chef_node_name

cat /tmp/chef_node_name | cut -d. -f1 > /tmp/proper_hostname
cat /tmp/chef_node_name | cut -d. -f2 | tr -d "\n" > /tmp/proper_dnsdomainname
echo -n "." >> /tmp/proper_dnsdomainname
cat /tmp/chef_node_name | cut -d. -f3 >> /tmp/proper_dnsdomainname

IPV4ADDR=`ip addr | grep eth0 | grep "inet " | cut -d " " -f 6 | cut -d \/ -f 1`
PROPERHOSTNAME=`cat /tmp/proper_hostname`
PROPERDNSDOMAINNAME=`cat /tmp/proper_dnsdomainname`

NETCONF="/etc/hostname"
echo "${PROPERHOSTNAME}" > ${NETCONF}

(
cat <<EOF
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
${IPV4ADDR} ${PROPERHOSTNAME}.${PROPERDNSDOMAINNAME} ${PROPERHOSTNAME}
EOF
) > /tmp/hosts
sudo mv /tmp/hosts /etc/hosts
sudo hostname $PROPERHOSTNAME


(
echo "export PS1=\"\\\\H:\\\\w\\\\\\$ \"" >> /etc/profile
)

sudo apt-get -y install wget

(
echo "deb http://apt.opscode.com/ lucid main" | sudo tee /etc/apt/sources.list.d/opscode.list
wget -qO - http://apt.opscode.com/[email protected] | sudo apt-key add -
sudo apt-get update
)

echo "chef  chef/chef_server_url  string  <%= Chef::Config[:chef_server_url] %>" | debconf-set-selections
sudo apt-get install -y chef

(
cat <<'EOP'
<%= IO.read(Chef::Config[:validation_key]) %>
EOP
) > /tmp/validation.pem
awk NF /tmp/validation.pem > /etc/chef/validation.pem
rm /tmp/validation.pem

(
cat <<'EOP'
log_level        :info
log_location     STDOUT
chef_server_url  "<%= Chef::Config[:chef_server_url] %>"
validation_client_name "<%= Chef::Config[:validation_client_name] %>"
<% if @config[:chef_node_name] == nil %>
# Using default node name"
<% else %>
node_name "<%= @config[:chef_node_name] %>"
<% end %> 
EOP
) > /etc/chef/client.rb

(
cat <<'EOP'
<%= { "run_list" => @run_list }.to_json %>
EOP
) > /etc/chef/first-boot.json

/usr/bin/chef-client -j /etc/chef/first-boot.json
'