Remove node, npm, nvm and install again

nvm-install.sh

#!/bin/bash
# node-reinstall
# credit: 
# http://stackoverflow.com/a/11178106/2083544
# https://gist.github.com/brock/5b1b70590e1171c4ab54

## program version
## Update versions accordingly. https://github.com/creationix/nvm/releases
VERSION="0.31.0"

## path prefix
PREFIX="${PREFIX:-/usr/local}"

## version control systems
USE_NAVE=0
USE_NVM=1

# use --force to bypass user confirmation
FORCE=0



usage () {
  printf "%s\n" "node-reinstall"
  printf "\t%s\n" "completely re-installs Node & NPM and any global node modules."
  printf "\t%s\n" "It re-installs Node using NVM or Nave"
  printf "\n"
  printf "%s\t%s\n" "Usage:" "node-reinstall [--nave|--nvm|--nvm-latest] [-h|--help] [-v|--version] [NODE_VERSION]"
  printf "\n"
  printf "%s\n" "Commands:"
  printf "\n"
  printf "\t%s\t\t\t%s\n" "node-reinstall" "re-install node and npm using nvm"
  printf "\t%s %s\t%s\n" "node-reinstall" "[-h|--help]" "show help"
  printf "\t%s %s\t%s\n" "node-reinstall" "[-v|--version]" "show the node-reinstall version number"
  printf "\t%s %s\t%s\n" "node-reinstall" "[-f|--force]" "installs defaults without user confirmation"
  printf "\t%s %s\t\t%s\n" "node-reinstall" "--nave" "re-install using nave"
  printf "\t%s %s\t\t%s\n" "node-reinstall" "--nvm" "re-install using stable nvm - the default"
  printf "\t%s %s\t%s\n" "node-reinstall" "--nvm-latest" "re-install using latest nvm - creationix/nvm:master"
  printf "\t%s %s\t\t%s\n" "node-reinstall" "0.12" "specify a default node version - currently ${NODE_VERSION}"
  printf "\n"
}

## parse opts
{

  for opt in ${@}; do
    case $opt in
      --help|-h)
        usage
        exit
        ;;

      --version|-v)
        echo ${VERSION}
        exit
        ;;

      --force|-f)
        FORCE=1
        ;;

      --nave)
        USE_NAVE=1
        USE_NVM=0
        ;;

      --nvm)
        USE_NVM=1
        USE_NAVE=0
        ;;

      --nvm-latest)
        USE_NVM=1
        USE_NAVE=0
        STABLE=master
        ;;

      *)
        if [ "-" == "${opt:0:1}" ]; then
          echo >&2 "error: Unknown option \`$opt'"
          usage >&2
          exit 1
        fi

        NODE_VERSION="${opt}"
    esac
  done

}

# get sudo
sudo -v

# check to see if npm is installed
IS_NPM_MISSING=$(which npm)
if [[ -z $IS_NPM_MISSING ]]; then
  echo "Installing Node, npm."
else
  echo "Completely reinstalling Node, npm."
  # get list of global npm modules to reinstall
  # omit the lib directory listing
  GLOBAL_MODULES=`npm -g list --depth 0 --parseable | xargs basename | sed -E 's/^(lib|npm)$//g'`
  if [[ -n $GLOBAL_MODULES ]]; then
    echo "Will reinstall these global npm modules:"
    echo $GLOBAL_MODULES
  else
    echo "===== ALERT! ====="
    echo "The script did not find any global node modules (npm -g list)"
    echo "If you are sure you installed global node modules"
    echo "(by running npm install -g some-module), you might want to stop "
    echo "here and locate those, because they won't be re-installed,"
    echo "and since we'll be deleting all the possible install paths "
    echo "that most people could use, you probably won't find them."
    echo ""
    echo "This can sometimes happen if you've installed global node modules"
    echo "under a different node environment (for example, using nvm or nave)."
    echo "It might help to run: "
    echo "history | grep 'npm install' and look for either -g or --global"
    echo ""
    echo "If you aren't really sure, or you are sure and don't care, "
    echo "you can continue; we'll re-install things the proper way, and"
    echo "the next time you run this script you'll see a list of "
    echo "any global node modules you've installed since now."
  fi

  if [[ $FORCE == 0 ]]; then
    echo ""
    echo "Would you like to continue running node-reinstall?"
    echo ""
    select yn in "Yes" "No"; do
          case $yn in
              Yes ) break;;
              No ) exit;;
          esac
    done
  fi
fi


# erase all possible install paths
sudo rm -rf $HOME/{local,lib,include,node*,npm,.npm*,.nvm*,.jspm*,.node-gpy*}
sudo rm -rf $PREFIX/lib/node*
sudo rm -rf $PREFIX/include/node*
sudo rm -rf $PREFIX/bin/{node,npm}
sudo rm -rf $PREFIX/share/man/man1/node.1
sudo rm -rf $PREFIX/lib/dtrace/node.d


if [[ $OSTYPE =~ "darwin" ]]; then
  echo "npm, node is removed 👍"
else
  echo "npm, node is removed "
fi

echo "brew uninstall nvm"
brew uninstall nvm

echo "install nvm"
# https://github.com/creationix/nvm
curl -o- https://raw.githubusercontent.com/creationix/nvm/v${VERSION}/install.sh | bash

echo "nvm is installed"
echo "====================================="
echo "PLEASE READ AND FOLLOW BELOW INSTRUCTIONS"
echo "====================================="
echo "Make sure .zshrc, .bashrc and .bash_profile has the below contents"

echo "====================================="
echo ".zshrc"
echo "====================================="

echo "export NVM_DIR="/Users/nithyans/.nvm""
echo "[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"  # This loads nvm"

echo "====================================="
echo ".bash_profile"
echo "====================================="

echo "export PATH=/usr/local/bin:$PATH"

echo "export NVM_DIR="/Users/nithyans/.nvm""
echo "[ -s "$NVM_DIR/nvm.sh" ] && . "$NVM_DIR/nvm.sh"  # This loads nvm"

echo "====================================="
echo "You must restart your terminal for changes to take effect."
echo "====================================="

echo "====================================="
echo "install node"
echo "====================================="
echo "Run - nvm install 0.12.5"
echo "Run - nvm alias default 0.12.5"