Installation script: Bower and Gulp for JavaScript development

InstallBowerAndGulpMac.sh

#!/bin/bash
# Mac version

# Install Homebrew package manager:
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
brew update

# Install Node.js and npm
brew install node
npm install -g npm

# Install Bower and gulp
npm install -g bower
npm install -g gulp

InstallBowerAndGulpUbuntu.sh

#!/bin/bash
# Ubuntu version

# Install Node.js and npm
sudo apt-get update
sudo apt-get install nodejs
sudo apt-get install npm
sudo npm install npm -g

# Install Bower and gulp
sudo npm install bower -g
sudo npm install gulp -g

InstallBowerAndGulpWindows.cmd

@echo off
rem Windows version

echo Installing Chockolatey package manager:
@powershell -NoProfile -ExecutionPolicy Bypass -Command "iex ((new-object net.webclient).DownloadString('https://chocolatey.org/install.ps1'))" && SET PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin

echo Installing NodeJs and npm:
choco install nodejs -y
call "%ProgramFiles%\nodejs\npm" install -g npm

echo Installing Bower and gulp:
call "%ProgramFiles%\nodejs\npm" install -g bower
call "%ProgramFiles%\nodejs\npm" install -g gulp

echo Done.

sudo npm install npm -g

Might want to review that