#LINUX 鿴tcp״̬
netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}'

TCP״̬
LISTEN ԶTCP˿ڵ
SYN-SENT ٷȴƥ
SYN-RECEIVEDյͷһȴԷȷ
ESTABLISHED һ򿪵
FIN-WAIT-1 ȴԶTCPж󣬻ǰжȷ
FIN-WAIT-2 ԶTCPȴж
CLOSE-WAIT ȴӱûж
CLOSING ȴԶTCPжϵȷ
LAST-ACK ȴԭķԶTCPжȷ
TIME-WAIT ȴ㹻ʱȷԶTCPյжȷ
CLOSED ûκ״̬

#鿴9955˿ڵtcp
netstat -nat|grep -i "9955"|wc -l

3ͳϵģ״̬Ϊestablished
netstat -na|grep ESTABLISHED|wc -l


  о֣Linux˿һƵģϵĶ˿ֵΪ65535ȥһЩ˿ںͱռö˿⣬ҲӦ6WңʵϵʱĬϲ28232ӡ
    ִͺԭˣ
    $ cat /proc/sys/net/ipv4/ip_local_port_range
Ϊ
    32768   61000
    Linux˿ڵķΧڸ÷ΧбռõĶ˿ڣô϶С28232.Χִ
    # echo "10000 65535" > /proc/sys/net/ipv4/ip_local_port_range