Although our OS (RedHat Enterprise Server AS 3.0) has ruby, it is quite old: $ rpm -qa | grep ruby ruby-1.6.8-9.EL3.3 ruby-mode-1.6.8-9.EL3.3 ruby-libs-1.6.8-9.EL3.3 ruby-devel-1.6.8-9.EL3.3 Language itself is very stable, but changes in libraries (especially CGI) will cause trouble for me. So I'll try to update it. STEPS NET SEARCH Firstly, I have checked whether ruby is recognised by system or n