netstat | osof | ps -ef
host-10-99-234-105:/opt/gdc/smn/logs # netstat -luntp | grep 8091
tcp6 0 0 :::8091 :::* LISTEN 19622/java
host-10-99-234-105:/opt/gdc/smn/logs # lsof -i:8091
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
java 19622 paas 535u IPv6 809157320 0t0 TCP *:jamlink (LISTEN)
host-10-99-234-105:/opt/gdc/smn/logs # ps -ef | grep 19622
paas 19622 1 1 06:14 ? 00:00:57 java -server -Xms4009m -Xmx4009m -Xss256k -XX:+UseParallelOldGC -XX:+HeapDumpOnOutOfMemoryError -Dname=SmnService -cp ./ org.springframework.boot.loader.WarLauncher
root 28315 7672 0 07:38 pts/0 00:00:00 grep --color=auto 19622
telnet查看服务器端口是否启动
则运行telnet 192.192.193.211 22 来查看，如果出现下列信息，则表示该端口已打开。
telnet 10.62.38.128 8000 查看端口是否起来了
