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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/404]] 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.
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