Re: serial console
On Mon, 4 Aug 2025 14:15:22 -0000 (UTC)
Greg <curtyshoo@gmail.com> wrote:
> On 2025-08-04, <hohe72@posteo.de> <hohe72@posteo.de> wrote:
> >
> > Note that 'serial console' in Linux usually designates the system's
> > boot up messages, that also can be picked-off some pins and watched
> > remote. The non-X user interface entered by [alt]+[F<n>] is called
> > 'Linux console'.
>
> I always thought "serial" was an interface (now defunct, at least on
> consumer hardware).
>
Serial in computer terms usually meant a wired interface using
RS-232/V24 or later RS-422 or RS-485, though keyboards and mice also
used serial communication (and still do). These days it usually travels
over radio and is called Bluetooth.
Today the term 'serial console' usually means a means of communicating
with a server 'out-of-band', when the normal OS is not running, and
there is need for unattended hardware booting or boot troubleshooting.
Some kind of management option is available for most real servers which
achieves this.
--
Joe
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