On 2012-09-14 13:46, Michael Stowe wrote:
> The Linux kernel keeps its own time, generally in UTC. This is translated
> to "local time" depending on the environment process of the user itself.
> Thus, the backuppc user can have a completely different time than, say,
> you, or root.
>
> Depending on the environment when BackupPC is launched, it may be
> operating on UTC, or any other arbitrary time zone, which can have
> absolutely nothing to do with the time zone you see (even as the backuppc
> user, since its environment can be different when launching BackupPC and
> when launched from the command line.)
>
> So, the most likely explanation, and one not yet eliminated, is that the
> scripts launching BackupPC do not have any time zones set, and therefore
> the backuppc process is inheriting the UTC time.
Processes which do not set a preferred time zone inherit the system default
defined by /etc/localtime, which is usually a copy of a timezone definition
file. For instance, you can set your system time zone like this:
cp -a /usr/share/zoneinfo/Etc/UTC /etc/localtime
However, this is only UTC if you set it that way during install.
Unless you have users that specifically go around setting the $TZ variable,
users will not have different times.
Regards,
Tyler
--
"When a claim is falsified in science [...], it is discarded. It is put
in the trashbin of bad ideas. When a claim of religion is falsified,
it becomes a metaphor."
-- Jerry Coyne
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