GNU bug report logs - #71986
RFC: date @ to support ms.

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#71986: closed (RFC: date @ to support ms.)
Date: Tue, 09 Jul 2024 12:40:01 +0000

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Your message dated Tue, 9 Jul 2024 14:39:15 +0200
with message-id <98eb0cde-d6a8-4e6b-b7c8-cf2fb8ee4806 <at> cs.ucla.edu>
and subject line Re: bug#71986: RFC: date @ to support ms.
has caused the debbugs.gnu.org bug report #71986,
regarding RFC: date @ to support ms.
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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From: Richard Neill <rn214 <at> cam.ac.uk>
To: bug-coreutils <at> gnu.org
Subject: RFC: date @ to support ms.
Date: Sun, 7 Jul 2024 20:46:45 +0100

Hello,

I've noticed a lot of systems now return the timestamp in milliseconds 
since the epoch, rather than seconds. This means that e.g.

  date --date='@1720378861258'

will do something rather unexpected!

May I suggest that it would be nice if date had an input format that 
would let me specify that the value is in ms?

I know we can bodge it with bc, or by injecting the decimal, or trimming 
off the last 3 chars, but that seems inelegant, and requires extra 
thinking (and hence bugs) from the programmer.
  date --date='@1720378861.258'

Perhaps one of these syntaxes might be suitable?

 date --date='@ms1720378861258'
 date --date='@@1720378861258'
 date --epoch-ms --date='@1720378861258'

Thanks very much,

Richard

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Richard Neill <rn214 <at> cam.ac.uk>
Cc: 71986-done <at> debbugs.gnu.org
Subject: Re: bug#71986: RFC: date @ to support ms.
Date: Tue, 9 Jul 2024 14:39:15 +0200

On 7/9/24 03:19, Richard Neill wrote:

> IP_JSON=$(curl https://whatsmyip.dev/api/ip)
> TS=$(echo $IP_JSON | jq '.ts' -r)
> TS=$(echo "$TS/1000" | bc)
> DATE=$(date --date @$TS)

This is better, as it saves on subprocesses:

IP_JSON=$(curl https://whatsmyip.dev/api/ip)
TS=$(jq -nr "$IP_JSON|.ts")
DATE=$(date -d @$((TS / 1000)))


> Anyway, I don't want to waste everyone's time, so if I haven't convinced 
> you, I'll leave it here, and say thank you very much for your 
> consideration.

You're welcome; closing the bug report.

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