The information on this page pertains to NetBeans IDE 6.5. If you are looking for information about Ruby Gems in 6.1, look here. Installing Gems You can install gems from the command line or you can use the NetBeans Gems Manager. Installing Gems From the Command Line To learn how to install gems in JRuby, see this "Getting Started" how-to on the JRuby wiki. For native Ruby platforms, the command l