When trying to read any exfat formatted SD card it suddenly was not recognised by my system, so I tried to upgrade from Kubuntu 18.10 to 19.10, and it didn't help. Then I found a post about that Exfat is not supported by the kernel before version 5.4, but Kubuntu 19.10 is shipped with 5.3, but the packages exfat-fuse and exfat-utils should take care of it, but they were already installed and did not work apparently. And also my kernel is 5.0.x for some reason (5.0.0-36-generic).
Put this in .bashrc: alias composer="php ~/composer/composer.phar"
Install Drupal 8 With Composer In Custom Web Folder
composer create-project drupal-composer/drupal-project:8.x-dev my_site_name_dir --no-interaction --no-install
Adjust web folder in composer.json file and then run "composer install".
You see something like this: Your system or network configuration does not allow Drupal to access web pages. This could be due to your webserver configuration or PHP settings.
HTTPRL - Core drupal_http_request()
You then go into your httprl config: /admin/config/development/httprl
And set the field "IP Address to send all self server requests to" to -1
You might have a couple of issues with mailR when running on a server.
When installing or after installing the r package: rJava you might encounter the following: libjvm.so: cannot open shared object file: No such file or directory
I fixed this on a ubuntu server with this command: sudo R CMD javareconf
Took me a while to find the perfect command for finding the biggest directory in the linux terminal. I was looking for something similar to the graphical tools like QDirStat and K4DirStat (Directory Statistics). In windows you can achieve this with windirstat.