Q:

How to install and use php-cgi

I have installed LAMP server via tasksel. Where is PHP directory? 
How to install and use php-cgi if I don't have it inside PHP directory (I need to copy php-cgi file from there)
Thanks in advance.

A:

If you're using tasksel You'll find php scattered throughout. However, if you're trying to use php-cgi, Ubuntu packages have that already configured.
sudo apt-get install php5-cgi libapache2-mod-php5

You can then enable apache to use it with:
sudo a2enmod php5-cgi
sudo service apache2 restart

Very VERY rarely will you ever need to copy files around to get something packaged working.

