How to provision software using Vagrant without sudo

I'm trying to setup Vagrant virtual machines to support my learning through Seven Databases in Seven Weeks. I'm provisioning software using basic shell scripts which performs appropriate actions within a sudo environment. However, I'm using the vagrant user to run the tutorials, and would like the provisioning to install the appropriate node / NPM modules as Vagrant, rather than through sudo. My current npm command is the last line in this provisioning script, but the module is unavailable when vagrant tried to execute node scripts. ``` apt-get update apt-get -y install build-essential apt-get -y install tcl8.5 wget http://redis.googlecode.com/files/redis-2.6.0-rc3.tar.gz tar xzf redis-2.6.0-rc3.tar.gz cd redis-2.6.0-rc3 make make install make test mkdir /etc/redis mv redis.conf /etc/redis/redis.conf sed -i.bak 's/127.0.0.1/0.0.0.0/g' /etc/redis/redis.conf sed -i.bak 's/daemonize no/daemonize yes/g' /etc/redis/redis.conf sed -i.bak 's/dir .\//dir \/var\/lib\/redis/g' /etc/redis/redis.conf cd src/ wget https://raw.github.com/gist/1053791/880a4a046e06028e160055406d02bdc7c57f3615/redis-server mv redis-server.1 /etc/init.d/redis-server mv redis-cli /etc/init.d/redis-cli chmod +x /etc/init.d/redis-server sed -i.bak 's/DAEMON=\/usr\/bin\/redis-server/DAEMON=\/usr\/local\/bin\/redis-server/g' /etc/init.d/redis-server useradd redis mkdir -p /var/lib/redis mkdir -p /var/log/redis chown redis.redis /var/lib/redis chown redis.redis /var/log/redis update-rc.d redis-server defaults /etc/init.d/redis-server start cd /etc/init.d/ echo ./redis-cli echo http://blog.hemantthorat.com/install-redis-2-6-on-ubuntu/ apt-get -y install python-software-properties python g++ make add-apt-repository -y ppa:chris-lea/node.js apt-get update apt-get -y install nodejs npm install hiredis redis csv ```