install gitweb on ubuntu/debian

you have to install the package gitweb sudo apt-get install gitweb

Then you have to edit the apache gitweb config file
$EDITOR /etc/apache2/conf.d/gitweb
change the line Alias /gitweb /usr/share/gitweb to Alias /git /usr/share/gitweb

open the /etc/gitweb.conf file:
you have to change the line $projectroot ".." to $projectroot "/code/git"
and change any other line containing /gitweb to /git for example
$stylesheet = "/gitweb/gitweb.css";
to $stylesheet = "/git/gitweb.css";


then reload you apache webserver with sudo /etc/init.d/apache2 force-reload


[Source:http://askubuntu.com/questions/10452/setting-up-gitweb-apache2]