apt-get -y install build-essential git curl wget \
libxslt-dev libcurl4-openssl-dev \
libssl-dev libyaml-dev libtool \
- libxml2-dev gawk \
+ libxml2-dev gawk parallel \
postgresql-9.3 postgresql-client-9.3 \
postgresql-contrib-9.3 libpq-dev libreadline-dev \
nginx language-pack-en sudo cron anacron \