diff --git a/setup.bash b/setup.bash
index 654c15d..853999d 100644
--- a/setup.bash
+++ b/setup.bash
@@ -1,24 +1,291 @@
 #!/bin/bash
 
-TMP_FILE='/tmp/node-installer-new.sh'
+# Installs node.js + dependencies for both Ubuntu and OS X
 
-set -e
-rm -rf /tmp/node-installer-new.sh
+#
+# See https://github.com/coolaj86/node-install-script
+#
 
-echo "Downloading and running the new installer script from https://git.daplie.com/coolaj86/node-install-script/raw/master/setup.bash"
+# curl -fsSL https://example.com/setup.bash | bash
+# wget -nv https://example.com/setup.bash -O - | bash
 
-SETUP_URL='https://git.daplie.com/coolaj86/node-install-script/raw/master/setup.bash'
+NODEJS_NAME="node"
+NODEJS_BASE_URL="https://nodejs.org"
+BASE_URL="https://raw.githubusercontent.com/coolaj86/node-install-script/master"
+NO_FAIL2BAN=""
+OS="unsupported"
+ARCH=""
+NODEJS_VER=""
+SETUP_FILE=""
+
+clear
 
 
-if [ -n "$(which curl)" ]; then
-  curl --silent "$SETUP_URL" \
-    -o "$TMP_FILE" || echo 'error downloading newer deps script:' "$SETUP_URL"
-    
-elif [ -n "$(which wget)" ]; then
-  wget --quiet "$SETUP_URL" \
-    -O "$TMP_FILE" || echo 'error downloading newer deps script:' "$SETUP_URL"
+
+#########################
+# Which OS and version? #
+#########################
+
+if [ "$(uname | grep -i 'Darwin')" ]; then
+  OSX_VER="$(sw_vers | grep ProductVersion | cut -d':' -f2 | cut -f2)"
+  OSX_MAJOR="$(echo ${OSX_VER} | cut -d'.' -f1)"
+  OSX_MINOR="$(echo ${OSX_VER} | cut -d'.' -f2)"
+  OSX_PATCH="$(echo ${OSX_VER} | cut -d'.' -f3)"
+
+  #
+  # Major
+  #
+  if [ "$OSX_MAJOR" -lt 10 ]; then
+    echo "unsupported OS X version (os 9-)"
+    exit 1
+  fi
+
+  if [ "$OSX_MAJOR" -gt 10 ]; then
+    echo "unsupported OS X version (os 11+)"
+    exit 1
+  fi
+
+  #
+  # Minor
+  #
+  if [ "$OSX_MINOR" -le 5 ]; then
+    echo "unsupported OS X version (os 10.5-)"
+    exit 1
+  fi
+
+  # Snow
+  if [ "$OSX_MINOR" -eq 6 ]; then
+    OS='snow'
+  fi
+
+  # Lion
+  if [ $OSX_MINOR -eq 7 ]; then
+    OS='lion'
+  fi
+
+  # Mountain Lion
+  if [ "$OSX_MINOR" -eq 8 ]; then
+    OS='mountain'
+  fi
+
+  # Mavericks, Yosemite
+  if [ "$OSX_MINOR" -ge 9 ]; then
+    OS='mavericks'
+  fi
+
+  if [ -n "$(sysctl hw | grep 64bit | grep ': 1')" ]; then
+    ARCH="64"
+  else
+    ARCH="32"
+  fi
+elif [ "$(uname | grep -i 'Linux')" ]; then
+  if [ ! -f "/etc/issue" ]; then
+    echo "unsupported linux os"
+    exit 1
+  fi
+
+  if [ -n "$(arch | grep 64)" ]; then
+    ARCH="64"
+  else
+    ARCH="32"
+  fi
+
+  if [ "$(cat /etc/issue | grep -i 'Ubuntu')" ]; then
+    OS='ubuntu'
+  elif [ "$(cat /etc/issue | grep -i 'Linux Mint')" ]; then
+    OS='ubuntu'
+  elif [ "$(cat /etc/issue | grep -i 'elementary OS')" ]; then
+    OS='ubuntu'
+  elif [ "$(cat /etc/issue | grep -i 'Debian')" ]; then
+    OS='ubuntu'
+  elif [ "$(cat /etc/issue | grep -i 'Trisquel')" ]; then
+    OS='ubuntu'
+  elif [ "$(cat /etc/issue | grep -i 'Zorin')" ]; then
+    OS='ubuntu'
+  elif [ "$(cat /etc/issue | grep -i 'Raspbian')" ]; then
+    OS='raspbian'
+  elif [ "$(cat /etc/issue | grep -i 'Fedora')" ]; then
+    OS='fedora'
+  fi
+else
+  echo "unsupported unknown os (non-mac, non-linux)"
+  exit 1
 fi
 
-set +e
+case "${OS}" in
+  fedora)
+    echo "FEDORA not yet supported (feel free to pull request)"
+    exit 1
+    ;;
+  ubuntu)
+    SETUP_FILE="ubuntu"
+    ;;
+  raspbian)
+    SETUP_FILE="ubuntu"
+    ;;
+  yosemite)
+    # mavericks
+    SETUP_FILE="mavericks"
+    ;;
+  mavericks)
+    SETUP_FILE="mavericks"
+    ;;
+  mountain)
+    echo "Mountain Lion not yet supported (feel free to pull request)"
+    exit 1
+    ;;
+  lion)
+    echo "Lion not yet supported (feel free to pull request)"
+    exit 1
+    ;;
+  snow)
+    echo "Snow Leopard not yet supported (feel free to pull request)"
+    exit 1
+    ;;
+  *)
+    echo "unsupported unknown os ${OS}"
+    exit 1
+    ;;
+esac
 
-bash $TMP_FILE
\ No newline at end of file
+
+
+
+#######################
+# Download installers #
+#######################
+
+echo "Preparing to install ${NODEJS_NAME} (and common development dependencies) for ${OS}" "${ARCH}"
+
+INSTALL_DEPS_FILE="setup-deps-${SETUP_FILE}.bash"
+INSTALL_FILE="setup-node-${SETUP_FILE}.bash"
+if [ ! -e "/tmp/${INSTALL_DEPS_FILE}" ]
+then
+  if [ -n "$(which curl)" ]; then
+    curl --silent "${BASE_URL}/${INSTALL_DEPS_FILE}" \
+      -o "/tmp/${INSTALL_DEPS_FILE}" || echo 'error downloading os deps script: '"${BASE_URL}/${INSTALL_DEPS_FILE}"
+    curl --silent "${BASE_URL}/${INSTALL_FILE}" \
+      -o "/tmp/${INSTALL_FILE}" || echo 'error downloading os setup script: '"${BASE_URL}/${INSTALL_FILE}"
+  elif [ -n "$(which wget)" ]; then
+    wget --quiet "${BASE_URL}/${INSTALL_DEPS_FILE}" \
+      -O "/tmp/${INSTALL_DEPS_FILE}" || echo 'error downloading os deps script: '"${BASE_URL}/${INSTALL_DEPS_FILE}"
+    wget --quiet "${BASE_URL}/${INSTALL_FILE}" \
+      -O "/tmp/${INSTALL_FILE}" || echo 'error downloading os setup script: '"${BASE_URL}/${INSTALL_FILE}"
+  else
+    echo "Found neither 'curl' nor 'wget'. Can't Continue."
+    exit 1
+  fi
+fi
+
+if [ ! -e "/tmp/${INSTALL_DEPS_FILE}" ]
+then
+  echo "Error Downloading Install File"
+  exit 1
+fi
+
+
+################
+# DEPENDENCIES #
+################
+
+if [ -z "$(which fail2ban-server | grep fail2ban)" ]; then
+  echo ""
+  echo "Your server didn't come with fail2ban preinstalled!!!"
+  echo "Among other things, fail2ban secures ssh so that your server isn't reaped by botnets."
+  echo ""
+  echo "Since you're obviously connecting this computer to a network, you should install fail2ban before continuing"
+  echo ""
+  echo "Install fail2ban? [Y/n]"
+  echo "(if unsure, just hit [enter])"
+  read INSTALL_FAIL2BAN
+
+  if [ "n" == "${INSTALL_FAIL2BAN}" ] || [ "no" == "${INSTALL_FAIL2BAN}" ] || [ "N" == "${INSTALL_FAIL2BAN}" ] || [ "NO" == "${INSTALL_FAIL2BAN}" ]; then
+    echo ""
+    echo "I don't think you understand: This is important."
+    echo ""
+    echo "Your server will be under constant attack by botnets via ssh."
+    echo "It only takes a few extra seconds to install and the defaults are adequate for protecting you."
+    echo ""
+    echo "Change your mind?"
+    echo "Ready to install fail2ban? [Y/n]"
+    read INSTALL_FAIL2BAN
+    if [ "n" == "${INSTALL_FAIL2BAN}" ] || [ "no" == "${INSTALL_FAIL2BAN}" ] || [ "N" == "${INSTALL_FAIL2BAN}" ] || [ "NO" == "${INSTALL_FAIL2BAN}" ]; then
+      clear
+      echo "you make me sad :-("
+      sleep 0.5
+      echo "but whatever, it's your funeral..."
+      sleep 1
+      NO_FAIL2BAN="nope"
+    else
+      echo "Phew, dodged the bullet on that one... Will install fail2ban.. :-)"
+    fi
+  fi
+fi
+
+bash "/tmp/${INSTALL_DEPS_FILE}" "${NO_FAIL2BAN}"
+
+#########################
+# Which node.js VERSION ? #
+#########################
+
+if [ -f "/tmp/NODEJS_VER" ]; then
+  NODEJS_VER=$(cat /tmp/NODEJS_VER | grep v)
+elif [ -f "/tmp/IOJS_VER" ]; then
+  NODEJS_VER=$(cat /tmp/IOJS_VER | grep v)
+fi
+
+if [ -n "$NODEJS_VER" ]; then
+  NODEJS_VERT=$(echo ${NODEJS_VER} | cut -c 2- | cut -d '.' -f1)
+
+  if [ $NODEJS_VERT -ge 1 ] && [ $NODEJS_VERT -lt 4 ]
+  then
+    echo "Selecting io.js instead of node.js for this version (>= 1.0.0 < 4.0.0)"
+    NODEJS_BASE_URL="https://iojs.org"
+    NODEJS_NAME="iojs"
+  fi
+fi
+
+if [ -z "$NODEJS_VER" ]; then
+  if [ -n "$(which curl)" ]; then
+    NODEJS_VER=$(curl -fsL "$NODEJS_BASE_URL/dist/index.tab" | head -2 | tail -1 | cut -f 1) \
+      || echo "error automatically determining current ${NODEJS_NAME} version"
+  elif [ -n "$(which wget)" ]; then
+    NODEJS_VER=$(wget --quiet "$NODEJS_BASE_URL/dist/index.tab" -O - | head -2 | tail -1 | cut -f 1) \
+      || echo "error automatically determining current ${NODEJS_NAME} version"
+  else
+    echo "Found neither 'curl' nor 'wget'. Can't Continue."
+    exit 1
+  fi
+fi
+
+#
+# node
+#
+if [ -n "$(which node | grep node 2>/dev/null)" ]; then
+# node of some version is already installed
+  if [ "${NODEJS_VER}" == "$(node -v 2>/dev/null)" ]; then
+    echo node ${NODEJS_VER} is already installed
+  else
+    echo ""
+    echo "HEY, LISTEN:"
+    echo ""
+    echo "node.js is already installed as node $(node -v | grep v)"
+    echo ""
+    echo "to reinstall please first run: rm $(which node)"
+    echo ""
+  fi
+
+  NODEJS_VER=""
+fi
+
+if [ -n "${NODEJS_VER}" ]; then
+  bash "/tmp/${INSTALL_FILE}" "${NODEJS_VER}"
+fi
+
+# jshint
+if [ -z "$(which jshint | grep jshint)" ]; then
+  echo "installing jshint..."
+  npm install --silent jshint -g > /dev/null
+fi
+
+echo ""