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Re: Full Julian date in date command formatting options?
From: |
Eric Blake |
Subject: |
Re: Full Julian date in date command formatting options? |
Date: |
Fri, 11 Oct 2013 13:18:22 -0600 |
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Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.0 |
On 10/11/2013 11:56 AM, Reed Underwood wrote:
> I wonder if it would be alright to implement a
> full Julian date in the date command's format options
> (maybe a %J?). It could be really useful in shell
> scripts, etc.
Can you give an example of what you mean be a full Julian date?
Furthermore, can you compose a full Julian date using existing
primitives already provided by date, or is there something fundamentally
unique to your proposed format that requires burning a letter? We are
really reluctant to burn a non-standardized letter without good cause
(burning %N to display nanoseconds is such a case - it was information
not available under any other existing format).
>
> I'm willing to implement the feature if it's
> decided it's useful and worth the trouble.
I'm not even sure what feature you are trying to add, and why it
justifies burning a letter to add it. Scripts are unable to take
advantage of the new letter until they have a new enough build of date
that includes the extension (may take years); whereas if you can do it
in longhand with existing options, they can use the longhand now.
Furthermore, rather than burning a %letter, we have lately tended to add
pre-canned formats: 'date --rfc-3339=seconds' being an example that
generates a given format without you having to remember which % options
build it up. For scripting, generating a common canned format via a
command-line option rather than burning a new arcane %letter would be
easier.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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- Full Julian date in date command formatting options?, Reed Underwood, 2013/10/11
- Re: Full Julian date in date command formatting options?,
Eric Blake <=
- Re: Full Julian date in date command formatting options?, Eric Blake, 2013/10/11
- Message not available
- Re: Full Julian date in date command formatting options?, Eric Blake, 2013/10/11
- Re: Full Julian date in date command formatting options?, Erik Auerswald, 2013/10/11
- Re: Full Julian date in date command formatting options?, Eric Blake, 2013/10/11
- Re: Full Julian date in date command formatting options?, Reed Underwood, 2013/10/11
- Re: Full Julian date in date command formatting options?, Reed Underwood, 2013/10/11
- Re: Full Julian date in date command formatting options?, Bob Proulx, 2013/10/12