Re: something that can display a Thumbs.db?
On 2/11/23 13:20, Linux-Fan wrote:
gene heskett writes:
Greetings All;
I'm in the middle pages of trying to build a voron 2.4 kit, a 3d
printer. Definitely not recommended for beginners. Very poor assembly
instructions. I've printed two versions of them, over 500 pages in
dead tree format but am getting poor and often out of order or missing
finishing touches, obviously the work of a designer who assumes this
is the 50th such project the user has built and Just Knows what to do
next..
I have unpacked the .stl files to feed cura and they generally work,
but each major section of the printed stuff also contains a Thumbs.db
file.
I'm not familiar with databases enough to know what to do, but being
able to see whats in this file in thumbnail form would sure help me to
build the next part I need. So what do we have that can display whats
in these files, from a Chinese originator?
File says this about one of them:
Thumbs.db: Composite Document File V2 Document, Cannot read section info
Thumbs.db is a file generated by Windows OSes to speed up image
previews. Users are not usually expected to need reading the file. On
Windows systems such files are usually “hidden” (Windows does not follow
the convention of the leading dot meaning hidden) such that they end up
in all kinds of places where they are not expected/useful.
Unless you are looking to extract minature previews of some ofther files
in that same directory, Thumbs.db may well be of little use to you.
Or in other Words: Whatever information you are missing and want to
extract from there, is unlikely to be contained in the Thumbs.db.
Is there something that can display the contents of that?
Debian has a package called `vinetto`. When I tried it on some random
`Thumbs.db` from Windows-originating files, it bailed out with
~~~
Traceback (most recent call last):
File "/usr/bin/vinetto", line 418, in <module>
print(" " + TNid + " " + TNtimestamp + " " + TNname)
TypeError: can only concatenate str (not "bytes") to str
~~~
That looks like a python2 -> python3 migration issue to me.
But: It extracted one thumbnail from the Thumbs.db that looks plausible.
If you must know about the Thumbs.db's contents, it might be interesting
to try this tool.
HTH
Linux-Fan
I take it back, the man page showed me how to extract the thumbnail
.jpg's so it is usefull.
now I have:
gene@coyote:~/Downloads/3dp.stf/trident/stl.stf_from_slipper/02面板安装部分$
ls -lR
total 2228
-rw-r--r-- 1 gene gene 3827 Feb 11 13:59 256_2d2493d05c55f5fe.jpg
-rw-r--r-- 1 gene gene 4186 Feb 11 13:59 256_426ee6c8f831d36.jpg
-rw-r--r-- 1 gene gene 4096 Feb 11 13:59 256_4ab7dd5f32a37df5.jpg
-rw-r--r-- 1 gene gene 3952 Feb 11 13:59 256_5307013a11fbed22.jpg
-rw-r--r-- 1 gene gene 4490 Feb 11 13:59 256_63d61390839bc3c8.jpg
-rw-r--r-- 1 gene gene 4701 Feb 11 13:59 256_998fc8153b45b98e.jpg
-rw-r--r-- 1 gene gene 3833 Feb 11 13:59 256_db1afa9086558c42.jpg
-rw-r--r-- 1 gene gene 4876 Feb 11 13:59 256_faf340636a3ac6f6.jpg
-rw-r--r-- 1 gene gene 75784 Sep 21 2021 bottom_panel_clip_x4.stl
-rw-r--r-- 1 gene gene 558984 Sep 21 2021 bottom_panel_hinge_x2.stl
-rw-r--r-- 1 gene gene 176284 Sep 21 2021 corner_panel_clip_3mm_x12.stl
-rw-r--r-- 1 gene gene 182384 Sep 21 2021 corner_panel_clip_6mm_x4.stl
-rw-r--r-- 1 gene gene 141884 Sep 21 2021 midspan_panel_clip_3mm_x12.stl
-rw-r--r-- 1 gene gene 143684 Sep 21 2021 midspan_panel_clip_6mm_x3.stl
-rw-r--r-- 1 gene gene 39936 Feb 9 09:31 Thumbs.db
-rw-r--r-- 1 gene gene 444584 Sep 21 2021 z_belt_cover_a_x2.stl
-rw-r--r-- 1 gene gene 444584 Sep 21 2021 z_belt_cover_b_x2.stl
drwxr-xr-x 2 gene gene 4096 Aug 4 2022 前门固定件
./前门固定件:
total 1660
-rw-r--r-- 1 gene gene 1437384 Sep 21 2021 door_hinge_x4.stl
-rw-r--r-- 1 gene gene 92784 Sep 21 2021 handle_a_x2.stl
-rw-r--r-- 1 gene gene 92784 Sep 21 2021 handle_b_x2.stl
-rw-r--r-- 1 gene gene 73684 Sep 21 2021 latch_x2.stl
but not an obvious way to link the hash number to the stl, and it did
not extract the last 4 mini jpg's. But I'm still ahead of the game as I
now know there's a subdir with 4 more stl's I didn't see before.
Thanks, it turns out to be helpfull. Another read of the manpage shows
me how to link them to real names, so further experimentation is in
order. Thanks a bunch.
[...]
Cheers, Gene Heskett.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/>
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