Solution:

cp -av source.tar.gz target--$(date +%Y-%m-%d-%H%M%S).tar.gz

After Drupal core + module updates:

The roles anonymous & authenticated disapeared

Instead of the page content I get this error: "You don't have access to this page".

Solution:

Export config from your website: drush cex

Export config from your old website or a new Drupal installation.

Move two files to the config dir of your websites sync directory:

Problem:

Solution:

stat --format '%a'  web/settings.php
stat --format '%a'  web/

Output: 

444

755

Problem:

Solution:

mkdir bench && cd bench/
wget https://github.com/sergix44/php-benchmark-script/archive/refs/heads/master.zip
unzip master.zip 
cd php-benchmark-script-master/
php bench.php --multiplier=2
php bench.php --multiplier=2  --mysql_host=localhost --mysql_user=myusername --mysql_password=mypass123

Problem:

Install Smartmontools:

apt install smartmontools

Check all Disks (HDD / SSD / NVMe)

Check all Disks (HDD / SSD):

for i in $(ls /dev/sd?); do echo "$i"; smartctl -H $i; done

Check all Disks (NVMe):

Combine Find and Grep to find "max_execution_time = 60" in all *.ini files (for PHP config).

Example:

find / -type f -name "*.ini" -exec grep -H 'max_execution_time = 60' {} \;

Problem:

Cannot start indexing because another indexing process (like a cron job or Drush command) is already running.

Solution?