How can i find out which modules are loaded in apache

apache-2.2

Is there a command in Linux to find out which modules are loaded and running in Apache?

httpd -M

or if you're using Ubuntu try

apache2 -M or apache2ctl -M

apache2ctl -V | grep SERVER_CONFIG_FILE

ps aux | egrep '(apache|httpd)' typically will show what apache is running as.

Usually you do not need to change the default user, "nobody" or "apache" are typically fine users. As long as its not "root" ;)

edit: more accurate command for catching apache binaries too