Script to automate setup of lx ubuntu zones on joyent triton

setup-vm.sh

#/bin/bash
set_tzdata ()
{
  # Change this to the timezone in your area
  ln -fs /usr/share/zoneinfo/US/Eastern /etc/localtime
  dpkg-reconfigure -f noninteractive tzdata
}

fix_fstab ()
{
  sed -ie 's/^none/#none/g' /etc/fstab
}

set_hosts ()
{
  sed -ie 's/'$oldhost'/'$host'/g' /etc/hosts
  sed -i '1i'$ipaddr'\t'$fqdn' '$host /etc/hosts
}

set_hostname ()
{
  echo "$host" > /etc/hostname
}

set_motd ()
{
  instance=`cat /etc/motd | grep Instance | cut -d'(' -f2`
  figlet -lf big $fqdn > /tmp/motd.tmp
  sed -i 's/[[:space:]]*$//' /tmp/motd.tmp
  echo "$(cat /tmp/motd.tmp)  Instance ($instance" > /etc/motd
}

create_vimrc()
{
  cat > /root/tmp.vimrc <<'_EOF'
begin-base64 644 .vimrc
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====
_EOF
  cd /root
  uudecode /root/tmp.vimrc
  rm /root/tmp.vimrc
}

hasfiglet=`which figlet`
if [ -f "$hasfiglet" ]
then
  echo "(figlet already installed)"
else
  echo "(installing figlet for banner)"
  apt-get -y install figlet
fi

hasuudecode=`which uudecode`
if [ -f "$hasuudecode" ]
then
  echo "(uudecode already installed)"
else
  echo "(installing sharutils for uudecode)"
  apt-get -y install sharutils
fi

if [ -z "$1" ]
then
  echo "!No FQDN or host label given!"
else
  fqdn="$1"
fi

host=`echo $fqdn | cut -d'.' -f1`
test1=`echo $fqdn | cut -d'.' -f2`

ipaddr=`ifconfig | grep Bcast | cut -d':' -f2 | cut -d' ' -f1`
oldhost=`cat /etc/hostname`

############################################################################
# These are the things we want to do every boot in a Triton LX-Ubuntu VM
############################################################################
apt-get update
apt-get -y dist-upgrade

############################################################################
# Only do these things on first boot (use .vimrc to flag the action as done)
############################################################################
if [ -f "/root/.vimrc" ]
then
  echo "(first boot settings already performed)"
else
  echo "(performing first boot actions)"
  fix_fstab
  if [ -z "$1" ]
  then
    echo "!No text label of any kind given, motd/hosts/hostname will be left alone!"
  else
    if [ -z "$test1" ]
    then
      echo "!Not passed a complete FQDN, leaving hosts/hostname unchanged!"
      echo "!Motd may look strange!"
    else
    	set_hosts
    	set_hostname
    fi
    set_motd
  fi
  set_tzdata
  create_vimrc
fi

exit 0