A: 

'/var/www' is where you should look. Most distros (actually, I don't know any that is not) put it there.

NawaMan
A: 

I would say it kind of depends on the configuration of your server.

Still, maybe something like /var/www would do, if it exists : this is the default, with many Linux distributions, for the HTTP root folder.

If it's not there, you should try to find the configuration file for Lighttpd (something like lighttpd.conf, probably somewhere under /etc) ; in that file, there should be the path for the server.document-root.
For more informations : Lighttpd - TutorialConfiguration

Pascal MARTIN
+3  A: 

That totally depends on your server configuration so your only reliable source of information should be lighttpd's configuration file which (if installed globally) should normally be within the /etc folder (e.g. /etc/lighttpd/lighttpd.conf).

Popular locations for the htdocs folder are /var/www or somewhere within /srv.

Horst Gutmann
Thanks alot for me path was srv/www/htdocs
Shishant
A: 

Actually, I believe that Arch Linux uses /srv/http as default in the apache-config (not sure about lighttpd though). However, it's easy to change.

Other than that, just look in the lighttpd-configuration file and you'll find your answer :)

xintron
A: 

Just looked it up. Arch Linux sets the documentroot to /src/http for both apache and lighttpd fyi.

xintron