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JDownloader and spontaneous core dump

JDownloader was working properly and than you just get core dumps all over again? Best try, upgrade your Java Runtime Environment.

sudo archlinux-java status
sudo pacman -S jre9-openjdk
sudo archlinux-java set jre9-openjdk
#if not needed anymore
sudo pacman -R jre8-openjdk

You need to update the $PATH variable. Either you restart your system or you open a new terminal to start JDownloader from their. All should work fine now.

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nextcloud upgrade 13 - how to upgrade from nextcloud 12 to 13

I am doing all via the command line. I've a separate data directory (not included below public/data).

Here are my simple steps (database backup not included). I did the upgrade from the latest 12 release. This is a KISS tutorial.

cd <root path>
wget "https://download.nextcloud.com/server/releases/nextcloud-13.0.0.zip"
unzip nextcloud-13.0.0.zip
mv public public_12_0_5
mv nextcloud public
cp public_12_0_5/config/config.php public/config/config.php
rsync -rv --dry-run public_12_0_5/apps public/apps
#if needed
#rsync -rv public_12_0_5/apps public/apps

Good luck on your side.

Currently, I've found one issue with my news application.

I needed to execute following SQL statement:

UPDATE oc_jobs SET reserved_at = 0 WHERE (argument = '["OCA\\News\\Cron\\Updater","run"]' OR class = 'OCA\\News\\Cron\\Updater');

Thanks to the how to fix it section.

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quick one, output the license for each composer.json project within a root path

A quick one since I have to alligne all my open source packages to theSPDX License List. To list all available licenses from my root path, I've quickly written this one liner.

find . -maxdepth 2 -name composer.json -type f -exec grep -i -H license {} \;

Boy, to write this one liner without having a look to one man-page took me ... well, ages.

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arch linux error: key "CEB167EFB5722BD6" could not be looked up remotely

On some machines, I get the following error when I run an "pacman -Syyu".

error: key "CEB167EFB5722BD6" could not be looked up remotely

I've found the best fox so far on this page.

#open /etc/pacman.d/gnupg/gpg.conf as root
#comment out existing server address and replace with following
#save the file afterwards
http://pool.sks-keyservers.net

#run following command as root
pacman-key --refresh-keys

#if the upgrade is still not working, signed the key (be aware to know what you are doing here!)
pacman-key --lsign-key CEB167EFB5722BD6

This was working on almost all machines. Only a few percent where still not able to be upgraded. What I did to fix this issue was to copy the the directory in "/etc/pacman.d/gnupg" from a working host to the not working one (make a backup first of course).

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