Steps

Install ruby (do one of the following as root or using sudo)

• Gentoo: emerge ruby
• Ubuntu/Debian: apt-get install ruby
• Fedora/Redhat: yum install ruby ruby-libs ruby-mode ruby-rdoc ruby-irb ruby-ri ruby-docs

Most of these commands were stolen from google so no guarantees.

Install beanmonitor

Simply run the following command as root / use sudo:

wget http://beanmonitor.googlecode.com/files/beanmonitor-singlesource.tar.bz2 ; tar jxf beanmonitor-singlesource.tar.bz2 ; \
rm LICENSE ; cp beanmonitor /usr/local/bin ; rm beanmonitor ; rm beanmonitor-singlesource.tar.bz2

This is kinda hackish but we are in the quick install guide here.