linux 查看进程占用端口

查看某些应用占用端口,排查某些端口被占用问题

1.先查看进程id
比如查看java进程id 现在是14981

root     14981     1  1 Aug15 ?        14:11:39 /usr/java/jdk1.8.0_144/jre/bin/java -Djava.util.logging.config.file=/usr/java/apache-tomcat-7/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djdk.tls.ephemeralDHKeySize=2048 -Djava.endorsed.dirs=/usr/java/apache-tomcat-7/endorsed -classpath /usr/java/apache-tomcat-7/bin/bootstrap.jar:/usr/java/apache-tomcat-7/bin/tomcat-juli.jar -Dcatalina.base=/usr/java/apache-tomcat-7 -Dcatalina.home=/usr/java/apache-tomcat-7 -Djava.io.tmpdir=/usr/java/apache-tomcat-7/temp org.apache.catalina.startup.Bootstrap start
root     25946 25919  0 16:20 pts/0    00:00:00 grep --color=auto java

2.执行命令 netstat -anp | grep 14981

tcp        0      0 0.0.0.0:8009            0.0.0.0:*               LISTEN      14981/java          
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      14981/java          
tcp        0      0 0.0.0.0:443             0.0.0.0:*               LISTEN      14981/java          
tcp        0      0 127.0.0.1:8005          0.0.0.0:*               LISTEN      14981/java 

上面为该进程占用的port