I suppose it depends on the version.

On Sun, Mar 2, 2025 at 10:55 AM Ralf Heyde <ralf.he...@gmx.de.invalid>
wrote:

> Hey,
>
> You might use ‚luke‘ to figure it out.
>
> Luke is part of the lucene project and a tool to look into indexes.
>
> Cheers Ralf
>
> Von meinem Telefon gesendet, etwaige Rechtschreibfehler kann ich nicht
> ausschliessen
> > Am 02.03.2025 um 08:18 schrieb Mikhail Khludnev <m...@apache.org>:
> >
> > Hi Daniel.
> > Giving >Lucene41< my bet it's written by 4.1..4.9 version.
> > Presumably you may get 4.9 (a decade old, heh) and invoke
> >
> https://lucene.apache.org/core/4_9_0/demo/overview-summary.html#Searching_Files
> >
> > Or write a snippet of code, which opens a Directory\IndexReader and then
> > print it to console that should answer your questions.
> >
> >> On Sun, Mar 2, 2025 at 12:21 AM Daniel Cerqueira <dan.l...@lispclub.com
> >
> >> wrote:
> >>
> >> I have this lucene index files, in a directory:
> >>
> >> ```
> >> $ ls
> >> _1p.fdt  _1p.fdx  _1p.fnm  _1p_Lucene41_0.doc  _1p_Lucene41_0.pos
> >> _1p_Lucene41_0.tim  _1p_Lucene41_0.tip  _1p.nvd  _1p.nvm  _1p.si
> >> segments_1  segments.gen  write.lock
> >> ```
> >>
> >> - How can I know which is the version of this lucene index?
> >> - Which codec does it uses?
> >> - What command line do I use (in a terminal) to create a lucene index
> >>  with the same version as the files above?
> >>
> >> Cheers.
> >>
> >> ---------------------------------------------------------------------
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> >>
> >>
> >
> > --
> > Sincerely yours
> > Mikhail Khludnev
>
>
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>

-- 
Sincerely yours
Mikhail Khludnev

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