Hi! I am running into problems with shell_exec. I want to convert a *.doc file into png with libreoffice. The .doc file lies within the files folder of a drupal website. The command I want to execute (in a php file) is the following: I added the following to the suders file with visudo, in order to be able to call the libreoffice command: web2 ALL=(root) NOPASSWD: /usr/bin/libreoffice web2 is the php user (I use nginx + php-fpm) I can call the /usr/bin/libreoffice command, however, I always get the following output from libreoffice: So apparently the *.doc file can't be accessed. In my development box the command works fine. I use a vagrant box with nginx + php-fpm. So I guess the problem lies with some stricter access rules in Ispconfig. Any Idea how I can make this work with ISPConfig?