Hello, I tried searching these forums, general web page and ISPConfig documentation book but have'nt found any info about how is ISPConfig programmed or how does it control other software on a server. Is it wholly PHP app which casts shell commands? Is there any detailed description rather than "features"? Thanks!
The software is written in php. You can check the code to see, who different jobs are done. There are several ways to write configs (use postconfig, create the full config).