*** PRODUCTION ENV *** Machine : remote VPS SSD 2 OS distro : Ubuntu 18.04 Cpanel : ISPConfig 3.2.2 Web server : apache 2.4 *** APP TO INSTALL *** Horde Groupware Webmail Edition (HGWE) : free, enterprise ready, browser based communication suite Hello, First of all, one of the prerequisites is to install HGWE using PEAR : PHP Extension and Application Repository. As to follow provided instructions, I wished to locate and open PHP.INI file on my system, but such this file is located iin different sub-folders within /ect/php/7.2 directory. That said, I found in each of these PHP.INI files the string that confirm a PEAR installation that matches this requirement : “find the include_path and make sure that /usr/share/php is part of the list.“ *** QUESTION *** Is there a main system PHP.INI file whose others PHP.INI files found in sub-folders within /ect/php/7.2 directory are children of ? *** MORE INFOS *** Prerequisites (section 4/7) : https://www.horde.org/apps/webmail/docs/INSTALL#prerequisites Regards