Calculate the number of online WWW users

【Abstract】 the two methods for calculating the number of online WWW users are compared.
Calculate the number of online WWW users

Method 1:

'Netstat-A | grep HTTP | awk' {print $5} '| cut-d ": "-F1 | sort | uniq | WC-L | awk '{print $1-1 }'

This is my method from the Internet. And more popular.

Method 2:

The method we use.

'Netstat-an | grep ": 80" | grep-I established | awk' {print $5} '| cut-d ": "-F1 | sort | uniq | WC-L | awk '{print $1-1 }'

Method 2 does not require reverse resolution, so the speed is faster than the method. But you need to get the established link, so you need grep-I established. Assume that the WWW port is 80.

The above two methods passed the test in RedHat Linux as3. method 2 is better than method 1.