sudo apt-get install build-essential openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt-dev autoconf libc6-dev ncurses-dev automake libtool bison subversion libcurl4-openssl-dev mysql-client libmysqlclient-dev imagemagick libmagickcore-dev libmagickwand-dev memcached