perchè? che devo fare?pasqualino:/home/gmalex# apt-get install apache2
Reading Package Lists... Done
Building Dependency Tree... Done
Package apache2 is a virtual package provided by:
apache2-mpm-worker 2.0.49-1
apache2-mpm-threadpool 2.0.49-1
apache2-mpm-prefork 2.0.49-1
apache2-mpm-perchild 2.0.49-1
You should explicitly select one to install.
E: Package apache2 has no installation candidate