Computing www Online number _ Internet surfing

"Summary" Two methods of computing the number of WWW online, and made a comparison.
Calculate the number of WWW online

　　

Method One:

' Netstat-a | grep Http|awk ' {print $} ' |cut–d ': '-f1|sort| Uniq |wc-l | awk ' {print $1-1} '

This is the way I look at the Internet. and more popular.

　　

Method Two:

The method we use.

' Netstat-an | grep ": 80" | Grep-i established | awk ' {print $} ' |cut–d ': '-f1|sort| Uniq |wc-l | awk ' {print $1-1} '

　　

Method Two does not need a reverse parsing, so the speed will be faster than the method. But need to get the link already established, so want to grep–i established. This is assumed that the WWW port is 80.

　　

The above two methods pass the test under Redhat Linux AS3, method Two is better than method one.