How to change the tomcat port number in Linux

I have several tomcats here. If I use them at the same time, I need to change the port numbers to different ones:

1. First, cd into the conf folder in the tomcat directory and open the server.xml configuration file with vi

[root@localhost soft]# ls
download redis solrhome tomcat-sina-8081 tomcat-souhu-8082
jdk redis-3.0.0.gem tomcat tomcat-solr zookeeper-3.4.6
[root@localhost soft]# cd tomcat-solr/
[root@localhost tomcat-solr]# cd conf/
[root@localhost conf]# ls
Catalina catalina.properties logging.properties tomcat-users.xml
catalina.policy context.xml server.xml web.xml
[root@localhost conf]# vim server.xml

2. Change 1

8005 changed to 8885

<Server port="8885" shutdown="SHUTDOWN">
<!-- Security listener. Documentation at /docs/config/listeners.html
<Listener className="org.apache.catalina.security.SecurityListener" />

3. Change 2

8080 changed to 8888

<Connector port="8888" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" />

4. Change 3

8009 changed to 8889

<!-- Define an AJP 1.3 Connector on port 8009 -->
<Connector port="8889" protocol="AJP/1.3" redirectPort="8443" />

5. wq save and exit

Finally, try starting it in the bin directory of tomcat: ./startup.sh: OK

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