[sabat]

most dev-ops and sysadmins don't know ruby

I beg to differ—if you call yourself a devops person and you don't know Ruby, you're somewhat rare. Yes, yes, python, blah blah. But most of us do Ruby, partly because that's what the most popular, widely used tools are written in (Chef, Puppet), and partly because it's an elegent and easy-to-understand language.

If you say you're devops and you don't do anything besides Bash: you're not devops.