网络相关命令-netstat

网络相关命令

1. netstat显示网络状态

usage: netstat [-vWeenNcCF] [<Af>] -r netstat {-V|--version|-h|--help} netstat [-vWnNcaeol] [ ...] netstat { [-vWeenNac] -i | [-cWnNe] -M | -s }

    -r, --route              display routing table

    -i, --interfaces         display interface table

    -g, --groups             display multicast group memberships

    -s, --statistics         display networking statistics (like SNMP)

    -M, --masquerade         display masqueraded connections

    -v, --verbose            be verbose

    -W, --wide               don't truncate IP addresses

    -n, --numeric            don't resolve names

    --numeric-hosts          don't resolve host names

    --numeric-ports          don't resolve port names

    --numeric-users          don't resolve user names

    -N, --symbolic           resolve hardware names

    -e, --extend             display other/more information

    -p, --programs           display PID/Program name for sockets

    -c, --continuous         continuous listing

    -l, --listening          display listening server sockets

    -a, --all, --listening   display all sockets (default: connected)

    -o, --timers             display timers

    -F, --fib                display Forwarding Information Base (default)

    -C, --cache              display routing cache instead of FIB

常用选项： netstat -apn | grep 8000 监听占用8000端口的程序状态。

示例

~$netstat -apn |grep 2000

tcp 0 0 0.0.0.0:2000 0.0.0.0:* LISTEN 3311/ser
tcp 0 0 192.168.1.103:2000 192.168.1.103:44100 TIME_WAIT -
tcp 0 0 192.168.1.103:2000 192.168.1.103:44102 TIME_WAIT -
tcp 0 0 192.168.1.103:2000 192.168.1.103:44099 TIME_WAIT -
tcp 0 0 192.168.1.103:2000 192.168.1.103:44103 TIME_WAIT -
tcp 0 0 192.168.1.103:2000 192.168.1.103:44098 TIME_WAIT -
tcp 0 0 192.168.1.103:2000 192.168.1.103:44101 TIME_WAIT -

参考应用：解决TIME_WAIT过多造成的问题_转