>>9759
Long task to automatically verify the files by file (as opposed to by piece, which spans across files, in BitTorrent) did not complete: ended by reboot. I verified the rest of them manually: found 100 mismatches. Bright side: did a thing to more quickly check <s>variadic</s> various stuff manually. What I did in the past:
>'$ h="something1"', '$ cmd "$h"', '$ h="something2"', '$ cmd "$h"', etc.
Quicker method:
>'$ read -p "Enter text: " h', '[input text]', '$ cmd "$h"', '$ read -p "
Enter text: " h', '[input text]', '$ cmd "$h"', etc
= 5 fewer keystrokes. Real examples:

$ # older:
$ h="98294 - rarity artist:brianblackberry.png"
$ sqlite3 -column -header -csv -cmd "select * from images where md5sum=\"$(md5sum "$h" | sed "s/ .*//g")\";foobar" -bail $path1/meta.sqlite 2>/dev/null
id,md5sum,type,uploader,tags,source,rating,date,origfn,w,h,size,filename,sel
98294,fc026712961fead7b390e667a149a3c1,png,Anonymous,"artist:brianblackberry rarity",http://www.canterlot.com/gallery/image/989-rarity-lounge-singer-final/,safe,"2011-12-14 09:41:44.510538",gallery_69_17_44320.png,642,826,448227,"98294 - rarity artist:brianblackberry.png",1
$ h="61297 - g1_backstory g1 Moondancer.jpg"
$ [sqlite3...showed no results for hash of file 61297*]
$ # newer:
$ sqlite3 -column -header -csv -cmd "select * from images where md5sum=\"$(md5sum "$h" | sed "s/ .*//g")\";foobar" -bail $path1/meta.sqlite 2>/dev/null
id,md5sum,type,uploader,tags,source,rating,date,origfn,w,h,size,filename,sel
24149,5ddacb3770921123dc417c5595620b42,png,Anonymous,"artist:sanguiniuschan rarity",http://sanguiniuschan.deviantart.com,safe,"2011-06-13 20:18:23",drink_special_by_chistery_by_sanguiniuschan-d3ip3uz.png,1032,774,265116,"24149 - artist:sanguiniuschan rarity.png",0
$ read -p "Enter a filename: " h
Enter a filename: 169759 - Madame_Pinkie_Pie gypsy_magic fortune_teller crystal_ball pinkie_pie animated.gif
$ [sqlite3...showed no results for hash of file 169759*]

I wish that qBittorrent had a thing to only recheck missing torrent pieces. That could be programmed in, and it probably wouldn't mess up verification of the top-level infohash. Otherwise, lots of I/O gets wasted.

Also, whoever made those ponibooru.org torrents like a decade ago: thanks for applying a piece size of 256K. A larger piece size would have been more of a headache to deal with, I think. Image from that website.