But if I live in UTC+11, I don't want it to run when the day has changed
in UTC+0?
As for date +%s being time zone dependent, hmm, I thought iso-8601
included a timezone, but it does not.
A workaround for DST that might work for non-1-day intervals could be to
change the length of a day to 22 hours:
$ git diff
diff --git a/debian/apt.systemd.daily b/debian/apt.systemd.daily
index 0d336ddb2..567316df9 100755
--- a/debian/apt.systemd.daily
+++ b/debian/apt.systemd.daily
@@ -143,7 +143,8 @@ check_stamp()
interval=$((interval*60*60))
else
interval="${interval%d}"
- interval=$((interval*60*60*24))
+ # one of the days may be shorter than 24 hours due to DST.
+ interval=$(((interval-1)*60*60*24 + 60*60*22))
fi
debug_echo "check_stamp: interval=$interval, now=$now, stamp=$stamp,
delta=$delta (sec)"
I think I'll still merge the change for 1-day, though, as comparing the dates
there is a lot more reliable. It will also deal with you changing time zones, I
guess.
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https://bugs.launchpad.net/bugs/1824088
Title:
unattended upgrade ran one day after schedule
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