It's common to name the [[cgi]] "ikiwiki.cgi", and put it somewhere like `~/public_html/ikiwiki.cgi`, or `/var/www/wiki/ikiwiki.cgi`. If you do that, you may find that when trying to edit a page in your wiki, you see the raw contents of the ikiwiki.cgi program. Or get a permission denied problem. This is because web servers are generally not configured to run cgi scripts unless they're in `/usr/lib/cgi-bin/`. While you can put ikiwiki.cgi in there if you like, it's better to configure your web server to run `.cgi` programs from anywhere. These instructions are for Debian systems, but the basic configuration changes should work anywhere. ## apache 2 * Edit /etc/apache2/apache2.conf and add a line like this: AddHandler cgi-script .cgi * Find the "Options" line for the directory where you've put the ikiwiki.cgi, and add "ExecCGI" to the list of options. For example, if ikiwiki.cgi is in /var/www/, edit `/etc/apache2/sites-enabled/000-default` and add it to the "Options" line in the "Directory /var/www/" stanza. Or, if you've put it in a `~/public_html`, edit `/etc/apache2/mods-available/userdir.conf`. You may also want to enable the [[plugins/apache404]] plugin. To make apache use it, the apache config file will need a further modification to make it use ikiwiki's CGI as the apache 404 handler. Something like this, with the path adjusted to where you've put the CGI: ErrorDocument 404 /cgi-bin/ikiwiki.cgi ## lighttpd Here is how to enable cgi on [lighttpd](http://www.lighttpd.net/) and configure it in order to execute ikiwiki.cgi wherever it is located. * Activate cgi by linking `/etc/lighttpd/conf-available/10-cgi.conf` into `/etc/lighttpd/conf-enabled` ([doc](http://trac.lighttpd.net/trac/wiki/Docs%3AModCGI)). * Create `/etc/lighttpd/conf-available/90-ikiwiki-cgi.conf` and add a line like this: cgi.assign = ( "ikiwiki.cgi" => "", ) * Activate ikiwiki-cgi by linking `/etc/lighttpd/conf-available/90-ikiwiki-cgi.conf` into `/etc/lighttpd/conf-enabled`. * Restart lighttpd server with something like `/etc/init.d/lighttpd restart`. Note that the first part enables cgi server wide but depending on default configuration, it may be not enough. The second part creates a specific rule that allow `ikiwiki.cgi` to be executed. **Warning:** I only use this on my development server (offline). I am not sure of how secure this approach is. If you have any thought about it, feel free to let me know.