Script to install NVM, Node, PhantomJS and CasperJS without installing or using git.

Install PhantomJS, CasperJS and dependencies.

#!/bin/bash

# Sets node version to install.

export NODE_VERSION=v0.10.21;

# Verify if nvm installation exist, otherwise install.

if ! hash "nvm" >/dev/null 2>&1; then
    printf "Installing NVM %s\n" >&2
    curl https://raw.github.com/creationix/nvm/master/install-gitless.sh | sh;
fi
wait

# Installing Node! | Will skip if already exist
source $HOME/.bash_profile;
cd $HOME;
nvm install $NODE_VERSION;
wait
echo 'Node Installation Complete';

#Installing PhantomJS! | Will skip if already exist
source $HOME/.bash_profile;
npm install -g phantomjs;
wait
echo 'PhantomJS Installation Complete';

# Downloading CasperJS! Latest Dev Version 
cd $HOME/.nvm/$NODE_VERSION/lib/node_modules;
wget https://github.com/n1k0/casperjs/zipball/master;
unzip master;
mv *casperjs* casperjs;
cd $HOME/.nvm/$NODE_VERSION/bin;
ln -s $HOME/.nvm/$NODE_VERSION/lib/node_modules/casperjs/bin/casperjs casperjs;
source $HOME/.bash_profile;
wait
echo 'CasperJS Installation Complete';

# Verify Installation - Prompt with Alert if Problems.
commands_tocheck="nvm phantomjs casperjs"
missing_counter=0;

for needed_command in $commands_tocheck; do
  if ! hash "$needed_command" >/dev/null 2>&1; then
    printf "Command not found in PATH: %s\n" "$needed_command" >&2
    ((missing_counter++))
  fi
done

if ((missing_counter > 0)); then
  printf "There was something wrong with the installation. Please contact the Reference Store Team" >&2
  exit 1
fi

# Alert of Installation Completition.
echo >&2 "Dependecies Installation Complete Downloading JUTS "