ps (report process status) utility is not very
helpful when it comes to Java processes :
java executable path is usually so long, that the
ps listing does not show any of its paramaters even in
long mode.
ps utility shows each Java thread as a separate
process making for cluttered presentation
The table below shows the part of the output of the Linux ps
command on a system running multiple multithreaded Java applications:
15379 ? S 0:01 /usr/local/java/ibm-jdk1.3/jre/bin/exe/java -Djava.se 15393 ? S 0:00 \_ /usr/local/java/ibm-jdk1.3/jre/bin/exe/java -Djav 15394 ? S 0:00 \_ /usr/local/java/ibm-jdk1.3/jre/bin/exe/java - 15395 ? S 0:00 \_ /usr/local/java/ibm-jdk1.3/jre/bin/exe/java - 15396 ? S 0:00 \_ /usr/local/java/ibm-jdk1.3/jre/bin/exe/java - 15399 ? S 0:00 \_ /usr/local/java/ibm-jdk1.3/jre/bin/exe/java - 12116 pts/4 S 0:02 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/exe/java - 12130 pts/4 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/exe/ja 12131 pts/4 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/ex 12132 pts/4 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/ex ... 26633 pts/8 S 0:56 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/exe/java - 26649 pts/8 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/exe/ja 26650 pts/8 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/ex 26651 pts/8 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/ex 26652 pts/8 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/ex 26655 pts/8 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/ex 26656 pts/8 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/ex 26657 pts/8 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/ex 26660 pts/8 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/ex 26662 pts/8 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/ex 26664 pts/8 S 0:04 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/ex 26665 pts/8 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/ex 26667 pts/8 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/ex 2379 pts/8 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/ex 26692 pts/9 S 0:04 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/exe/java - 26705 pts/9 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/exe/ja 26706 pts/9 S 0:00 | \_ /usr/local/java/ibm-jdk1.3/jre/bin/ex ... |
bash (GNU bourne shell) script that queries
the Linux /proc filesystem to print a concise listing
of Java processes.
The table below shows the output of the javaps script on
using the -noflags argument that strips Java flags.
$ javaps -noflags PID Process 12116 /usr/local/java/ibm-jdk1.3/jre/bin/exe/java edu.columbia.nestor.gaia.repository.Gaia /home/akonstan/Unix/packages/jdk-1.2/nestor-2.1a/etc/repository.conf 15379 /usr/local/java/ibm-jdk1.3/jre/bin/exe/java edu.columbia.nestor.util.HttpServer 8080 /home/akonstan/Unix/packages/jdk-1.2/nestor-2.1a/lib-dl 26633 /usr/local/java/ibm-jdk1.3/jre/bin/exe/java edu.columbia.nestor.agent.linux.LinuxAgent nestor://localhost 26692 /usr/local/java/ibm-jdk1.3/jre/bin/exe/java edu.columbia.nestor.agent.snmp.NestorMIB2Adapter /home/akonstan/Unix/packages/jdk-1.2/nestor-2.1a/mibs snorkel public nestor://localhost 27869 /usr/local/java/ibm-jdk1.3/jre/bin/exe/java edu.columbia.nestor.browser.Browser 31823 /usr/local/java/ibm-jdk1.3/jre/bin/exe/java Monitor nestor://localhost |
javaps { -noflag }
-D, -X, -classpath, -cp
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