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Linux command line:
When i execute the following command ps -ef |grep tomcat it shows me the following process
abcapp 28119 1 0 12:53 ? 00:00:19 /usr/java/jdk1.6.0_10//bin/java -Xmx256m -Dabc.log.file=/home/app/apps/rum/logs/dev.log -Dabc.config=dev -Dlog4j.configuration=file:///home/abcapp/env/abc_env/abc_env-1.2/config/log4j-webapp.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.util.logging.config.file=/home/abcapp/env/tomcat/tomcat-5.5-26-rum/conf/logging.properties -Djava.endorsed.dirs=/home/abcapp/env/tomcat/tomcat-5.5-26-rum/common/endorsed -classpath :/home/abcapp/env/tomcat/tomcat-5.5-26-rum/bin/bootstrap.jar:/home/abcapp/env/tomcat/tomcat-5.5-26-rum/bin/commons-logging-api.jar -Dcatalina.base=/home/abcapp/env/tomcat/tomcat-5.5-26-rum -Dcatalina.home=/home/abcapp/env/tomcat/tomcat-5.5-26-rum -Djava.io.tmpdir=/home/abcapp/env/tomcat/tomcat-5.5-26-rum/temp org.apache.catalina.startup.Bootstrap start
but when i issue following command it shows nothing
pgrep tomcat-5.5-26-rum OR pgrep "*-rum"
can some body help me how can i get tomcat process id by its name regex for "*-rum"
Thanks in advance.
276
Netstat command to find the PID of process listening on a port. here you go, 25414 is the PID or process id of your tomcat server. Since tomcat is a Java web application it started with java command and that's why you see 25414/java. If you see this error, then just sudo as the user which is running the tomcat.
Fig: 'ps' command displaying all Java processes running on Linux machine. The red color highlight in the above figure indicates the process IDs of all Java processes running on this EC2 instance. From here, you can get hold of your application's process ID.
A simple way to see if Tomcat is running is to check if there is a service listening on TCP port 8080 with the netstat command. This will, of course, only work if you are running Tomcat on the port you specify (its default port of 8080, for example) and not running any other service on that port.
For one, the pid is contained in a file, either under the Tomcat directory, or somewhere under var, inspect the catalina.sh and/or setenv.sh scripts to find out exactly where.
pgrep only search for the process name without the full path (in your case only java) and without arguments.
Since tomcat-5.5-26-rum is part of the latter, i'd search the pid with
ps -ef | grep tomcat-5.5-26-rum | grep java | awk ' { print $2 } '
The double grep is useful to discard the grep pids itself
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