The Webalizer produces yearly, monthly, daily and hourly statistics. In the monthly reports, various statistics may be produced to show overall usage,usage by day and hour, usage by visiting sites, URLs, user agents (browsers), referrers and country. The Webalizer is highly configurable by
use of either command line options or a configuration file, allowing the program to be tailored to individual needs easily.
For installinb webalizer in your linux machines then you have get the tool from their home site
For installing webalizer in ubuntu machines then you can install the tool from synaptic package maneger or just type
apt-get install webalizerfrom terminal
After installing the tool you have the configure the conf file.Basically in all linux operating system it will be located in