Installing JRuby in OSX

Be sure that you have installed java and download Lastest version of jruby from jruby.org website by using curl command.

curl -O http://jruby.org.s3.amazonaws.com/downloads/1.7.0.RC2/jruby-bin-1.7.0.RC2.tar.gz

Create a hidden directory under your home directory and unpack the file.

cd
mkdir .opt
mv /Downloads/jruby-bin-1.7.0.RC2.tar.gz
cd .opt
tar xvfz jruby-bin-1.7.0.RC2.tar.gz
ln -s jruby-1.7.0.RC2 jruby

Edit your .bash_profile file and add the following

export PATH=$PATH:/Users/kg/.opt/jruby/bin

Open a new terminal window