LINUX下如何查看tomcat运行状态，判断其是否启动

1，查看Tomcat启动日志。 ${catalina_home}logs 

[root@iZ25b4ffkfaZ logs]# tail -f catalina.out
Sep 10, 2015 11:50:00 AM org.apache.catalina.startup.HostConfig checkResources
INFO: Undeploying context [/examples]
Sep 10, 2015 11:50:00 AM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory examples-bak
Sep 10, 2015 11:50:00 AM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory docs-bak
Sep 10, 2015 11:50:33 AM org.apache.catalina.startup.HostConfig checkResources
INFO: Undeploying context []
Sep 10, 2015 11:50:34 AM org.apache.catalina.startup.HostConfig deployDirectory
INFO: Deploying web application directory ROOT-bak

JFinal action report -------- 2015-09-10 12:02:46 ------------------------------
Controller : demo.HelloController.(HelloController.java:1)
Method : index
--------------------------------------------------------------------------------

2，使用Tomcat默认的管理工具,(如果还使用的话) 
${Web_location}/manager/html 

3，netstat查看Tomcat服务的端口,看tomcat是否启动。 

[root@iZ25b4ffkfaZ bin]# netstat -na | grep 80
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:8005 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:8009 0.0.0.0:* LISTEN
tcp 0 0 101.200.90.203:50137 140.205.140.205:80 ESTABLISHED

注：查看tomcat的环境变量

[root@iZ25b4ffkfaZ bin]# ./catalina.sh
Using CATALINA_BASE: /usr/local/tomcat/apache-tomcat-6.0.44
Using CATALINA_HOME: /usr/local/tomcat/apache-tomcat-6.0.44
Using CATALINA_TMPDIR: /usr/local/tomcat/apache-tomcat-6.0.44/temp
Using JRE_HOME: /usr/local/java/jdk1.7.0_79/jre
Using CLASSPATH: /usr/local/tomcat/apache-tomcat-6.0.44/bin/bootstrap.jar
Usage: catalina.sh ( commands ... )
commands:
debug Start Catalina in a debugger
debug -security Debug Catalina with a security manager
jpda start Start Catalina under JPDA debugger
run Start Catalina in the current window
run -security Start in the current window with security manager
start Start Catalina in a separate window
start -security Start in a separate window with security manager
stop Stop Catalina, waiting up to 5 seconds for the process to end
stop n Stop Catalina, waiting up to n seconds for the process to end
stop -force Stop Catalina, wait up to 5 seconds and then use kill -KILL if still running
stop n -force Stop Catalina, wait up to n seconds and then use kill -KILL if still running
version What version of tomcat are you running?
Note: Waiting for the process to end and use of the -force option require that $CATALINA_PID is defined