Re: Alternatives that don´t suck?

[Collins Richey]

On Tue, Aug 19, 2008 at 1:29 PM, Lonni J Friedman <netllama at gmail.com> wrote:

> doesn't this change effectively allow multiple users to simultaneously
> control the modem?  If so, that seems rather bad.
>

One of the real drawbacks of Unix and plus points of a mainframe OS
like MVS or VM is the fact that non-sharable devices like tapes,
modems, communications connectors, etc. cannot be shared. There is a
standard function to reserve a device (called device allocation) for
exclusive use, and you don't need to be the equivalent of a root user
to allocate a device. Disks, of course, are treated differently.

-- 
Collins Richey
 If you fill your heart with regrets of yesterday and the worries
 of tomorrow, you have no today to be thankful for.