[root@localhost bin]# netstat -n | grep 80
tcp        1      0 192.168.11.4:46009          72.21.40.11:80              CLOSE_WAIT
tcp        1      0 192.168.11.4:46013          72.21.40.11:80              CLOSE_WAIT
tcp        1      0 192.168.11.4:46325          218.227.162.248:80          CLOSE_WAIT
tcp        1      0 192.168.11.4:46327          218.227.162.248:80          CLOSE_WAIT
tcp        1      0 192.168.11.4:46304          64.92.174.75:80             CLOSE_WAIT
tcp        1      0 192.168.11.4:46300          64.92.174.75:80             CLOSE_WAIT
[root@localhost bin]# netstat -n | grep 80 | wc -l
6
[root@localhost bin]#