...so I started with Yellow Dog in 2000. Then progressed through Red Hat, CentOS, Suse, Fedora, Slackware, Ubuntu and Gentoo. Now have a "tools for the job" relationship with Ubuntu, CentOS and OS X. (Work uses RHEL and CentOS).
I cannot conceive that anybody will require multiplications at the rate of 40,000 or even 4,000 per hour ... -- F. H. Wales (1936)