第1編linuxインストールと一般的なコマンド

1.システムの家に行って、Centos 7 Linuxシステムをダウンロードする.
2.linuxの一般的なコマンド.

Ctrl+Alt+F1     virtual               (Ctril+Alt+F2)

1.ifconfig -a         ip  .
2.exit              
3.clear           
4.Shift + PageUp        (linux       ，          )
5.Shift + PageDown      
6.pwd                   /  
7.ls/dir                  

3.linux下tomcat操作コマンド.

  bin     .

./startup.sh   Tomcat  

./shutdown.sh   Tomcat    

ps -ef|grep java   tomcat    

kill -9 121912  //    tomcat,  121912 ps -ef|grep java      .

問題:

1.tomcat        :
    Illegal access: this web application instance has been stopped already. Could not load org.IOItec.zkclient.ZkClient$8. The eventual following strack trace is caused by an error thrown for debugging purposes as well as to attempt to terminate the thread which caused the illegal access, and has no functional impact.
    java.lang.IllegalStateException
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1244)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1204)
    ...

      ：  tomcat         tomcat     ,           .