On 16/03/2020 01:19, John Rumm wrote:

Is Linux free or do you have to buy it?

Can be either. You can get paid for supported versions and free
equivalents. Most home users would opt for a non paid one. Larger
corporates will often go for the paid versions because they have far
more proactive support and patch management (and the cost of the license
is only a small part of TCO in the bigger picture).

Linux is always free. You may elect to pay for a support contract, however.


--
Future generations will wonder in bemused amazement that the early
twenty-first centurys developed world went into hysterical panic over a
globally average temperature increase of a few tenths of a degree, and,
on the basis of gross exaggerations of highly uncertain computer
projections combined into implausible chains of inference, proceeded to
contemplate a rollback of the industrial age.

Richard Lindzen