Re: Does Dimdows Know What Time It Is?

On 2024-09-30, CrudeSausage <crude@sausa.ge> wrote:

On 2024-09-29 2:59 p.m., DFS wrote:

On 9/28/2024 6:40 PM, Lawrence D'Oliveiro wrote:

Something Unix did that was different from most other OSes was, its
system
clock kept time in UTC (or GMT, in pre-UTC days). Linux does the same.
When you use a command like “date” to see what the current date and time
is, it converts that UTC time to a local time in some specified timezone.
Changing the timezone is as easy as specifying a new value for the TZ
environment variable.
>
Windows, on the other hand, keeps its system clock in local time, in some
specific time zone that is assumed to apply systemwide.
>
This is a particularly dumb idea when you realize how much it complicates
things if your time zone has daylight saving time. We have seen this sort
of thing happen on Windows systems before, where they might forget to
adjust the clock to start/stop daylight saving, or even adjust it
twice so
you end up being an hour off in the opposite direction.
>
This can’t happen on Linux systems, because there is no turning daylight
saving “on” or “off” as such: there is simply a table of local time
offsets (from the “tzdata” files), and the correct offset to apply
depends
only on the actual UTC time value, not on the current setting of any
system flag.
>
This also makes it easy to convert between UTC and local times at any
time
in the past, for any time zone.

 
 
I NEVER trust Linux to keep time.  I've encountered several occurrences
of it dropping 5-7 minutes over a 1-hour period.
 
 
* user error
* Linux is just the kernel
* RTFM newb
* Linux is perfect
* you're lying
* works for me
* you have the source code, fix it yourself

>
That's actually pretty sad if it was configured to synchronize with a
time server. I don't recall it ever happening to me, but stranger things
have happened.

I've never had any issues with Linux keeping time, my Linux computers
automatically change on cue with my cell phones. But I just do the standard
install, I don't screw around with it. And it handles daylight savings time
changes on its own. Maybe DuFuS's choice of NTP servers suck. He seems to
have a lot of trouble with Linux that no one else ever has. You have to work
pretty hard on Linux to get it to NOT work. It looks like DuFuS puts in that
needed time.

--
“Evil is not able to create anything new, it can only distort and destroy
what has been invented or made by the forces of good.”  —J.R.R. Tolkien