diff --git a/setup-min.sh b/setup-min.sh
index 8772af0..7667571 100644
--- a/setup-min.sh
+++ b/setup-min.sh
@@ -1,3 +1,204 @@
 #!/bin/bash
 
-echo "not implemented yet"
+# Installs iojs only (no development dependencies) for both Ubuntu and OS X
+
+#
+# See https://github.com/coolaj86/iojs-install-script
+#
+
+# curl -fsSL bit.ly/iojs-min | bash
+# wget -nv bit.ly/iojs-min -O - | bash
+
+# curl -fsSL https://example.com/setup-min.bash | bash
+# wget -nv https://example.com/setup-min.bash -O - | bash
+
+BASE_URL="https://raw.githubusercontent.com/coolaj86/iojs-install-script/master"
+OS="unsupported"
+ARCH=""
+IOJS_VER=""
+SETUP_FILE=""
+
+clear
+
+#########################
+# 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 'Fedora')" ]; then
+    OS='fedora'
+  fi
+else
+  echo "unsupported unknown os (non-mac, non-linux)"
+  exit 1
+fi
+
+case "${OS}" in
+  fedora)
+    echo "FEDORA not yet supported (feel free to pull request)"
+    exit 1
+    ;;
+  ubuntu)
+    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
+
+#######################
+# Download installers #
+#######################
+
+echo "Preparing to install io.js (and common development dependencies) for ${OS}" "${ARCH}"
+
+if [ -n "$(which curl)" ]; then
+  curl --silent "${BASE_URL}/setup-iojs-${SETUP_FILE}.bash" \
+    -o /tmp/install-iojs.bash || echo 'error downloading os setup script'
+elif [ -n "$(which wget)" ]; then
+  wget --quiet "${BASE_URL}/setup-iojs-${SETUP_FILE}.bash" \
+    -O /tmp/install-iojs.bash || echo 'error downloading os setup script'
+else
+  echo "Found neither 'curl' nor 'wget'. Can't Continue."
+  exit 1
+fi
+
+#########################
+# Which io.js VERSION ? #
+#########################
+
+if [ -f "/tmp/IOJS_VER" ]; then
+  IOJS_VER=$(cat /tmp/IOJS_VER | grep v)
+fi
+
+if [ -z "$IOJS_VER" ]; then
+  IOJS_VER="v1.0.3"
+fi
+
+#
+# iojs  
+#
+if [ -n "$(which iojs | grep iojs 2>/dev/null)" ]; then
+# iojs of some version is already installed
+  if [ "${IOJS_VER}" == "$(iojs -v 2>/dev/null)" ]; then
+    echo iojs ${IOJS_VER} is already installed
+  else
+    echo ""
+    echo "HEY, LISTEN:"
+    echo ""
+    echo "io.js is already installed as iojs $(iojs -v | grep v)"
+    echo ""
+    echo "to reinstall please first run: rm $(which iojs)"
+    echo ""
+  fi
+  IOJS_VER=""
+elif [ "$(node -v 2>/dev/null)" != "$(iojs -v 2>/dev/null)" ]; then
+# node of some version is already installed
+  echo ""
+  echo "HEY, LISTEN!"
+  echo ""
+  echo "You have node.js installed."
+  echo "Backing up $(which node) as $(which node).$(node -v)"
+  echo "(copy it back after the install to maintain node.js and io.js separately)"
+  echo ""
+  sleep 3
+  NODE_PATH=$(which node)
+  NODE_VER=$(node -v)
+  echo sudo mv "$NODE_PATH" "$NODE_PATH.$NODE_VER"
+  sudo mv "$NODE_PATH" "$NODE_PATH.$NODE_VER"
+  echo "################################################################################"
+  echo "to restore backup: sudo rsync -a '"$NODE_PATH.$NODE_VER"' '$NODE_PATH'"
+  echo "################################################################################"
+  echo ""
+fi
+
+if [ -n "${IOJS_VER}" ]; then
+  bash /tmp/install-iojs.bash "${IOJS_VER}"
+fi
+
+echo ""