Mark Roth wrote: > You do understand the relationship of CentOS to RHEL, right? Right :-) Once upon a time Red Hat was free. Then they decided to exist purely on support fees. Meanwhile a bunch of supporters invented a downstream variant called Centos. They worked very hard to remove all the Red Hat branding and recompile (is that the correct Linux term?) the software. There was so ugly goings on which were publicised but eventually resolved. The other downstream variant is called Scientific Linux and that is a joint collaboration between Europe's CERN and it's USA equivalent Fermilab. Then one day a big bad wolf called Oracle of very expensive Oracle SQL fame swallowed Red Hat, like they swallowed MySQL, Solaris, Open Office and Visual Box. The long term future for these is uncertain. Pure Centos is identical to Red Hat. However various repositories offer extras and variants which make the installed Centos slightly different from Red Hat. One can sometimes install some Fedora items into Centos. Centos is great. Will that do ? -- With best regards, Paul. England, EU.