On Sun, 2016-03-27 at 02:34 -0600, Bob Proulx wrote: > Ben Hutchings wrote: > > > > $ readlink /etc/localtime > > /usr/share/zoneinfo/Europe/London > I assume that your locale is set to en_GB.UTF-8? Could you provide > the output of locale so that we could see the other settings? I am > interested in LC_TIME and LC_ALL particularly.
LANG=C.UTF-8 LANGUAGE= LC_CTYPE="C.UTF-8" LC_NUMERIC=en_GB.UTF-8 LC_TIME=en_GB.UTF-8 LC_COLLATE="C.UTF-8" LC_MONETARY=en_GB.UTF-8 LC_MESSAGES="C.UTF-8" LC_PAPER=en_GB.UTF-8 LC_NAME="C.UTF-8" LC_ADDRESS="C.UTF-8" LC_TELEPHONE="C.UTF-8" LC_MEASUREMENT=en_GB.UTF-8 LC_IDENTIFICATION="C.UTF-8" LC_ALL= [...] > > This caused an upgrade of tzdata to fail for me. > It doesn't seem to me be a problem with date. Looking briefly at the > tzdata postinst I see this: > > set -e > ... > TZBase=$(LC_ALL=C TZ=UTC0 date) > UTdate=$(LC_ALL=C TZ=UTC0 date -d "$TZBase") > TZdate=$(unset TZ ; LANG=C date -d "$TZBase") > > Initially I don't see how that can fail but I may be missing > something. Can you provide any more information? > > I am probably missing something but I don't see a way for it to fail. > > TZBase=$(LC_ALL=C TZ=UTC0 date) > > That sets LC_ALL=C and therefore will have the standard format. > (I wish it used date -R format instead.) Yes, I was going to propose that change to tzdata before I realised that it was already selecting a standard format. [...] > In all three cases it was able to parse that date string okay. I wish > it set LC_ALL instead of LANG however so as to remove any doubt. > > What am I missing? To reproduce this I think you'll need to select a date/time around the DST transition in your time zone, or override TZ for the last command. Try this: TZBase=$(LC_ALL=C TZ=UTC0 date -d '2016-03-27 01:00') UTdate=$(LC_ALL=C TZ=UTC0 date -d "$TZBase") TZdate=$(TZ=Europe/London ; LANG=C date -d "$TZBase") Ben. -- Ben Hutchings Beware of bugs in the above code; I have only proved it correct, not tried it. - Donald Knuth
signature.asc
Description: This is a digitally signed message part
