Hello everyone! I need to make an interface on a website (the site would be on my server) to let visitors add an account for themselves for free. This would be a registration form, that after submitting would add a virtual hosts file to for example /etc/apache2/vhosts with correct definitions.The worst thing is that i can't work out a way to execute php scripts that would modify those files. I thought of executing a shell script from php,maybe using Cron for that job but it's too complicated for me at this time. I mean that a user would provide a username and a password by a form and php would save it to a file that would look like a shell script and Cron would execute it from time to time. Next thing i thought of was mod su_php to execute a php script,which would modify the needed files.I would like to know Your opinion about a way to securely add new vhosts to Apache.I need all info I can get from You more experienced people out there.Thanks in advance. My OS is Linux (preferrably OpenSuSE).