05-26-2010
Command to check if a particular process is running
Hi
What is the best command to check if a particular process is running in a linux server or not
To check any java process, I use the below command.
ps -ef |grep jvm
When I execute the above command, it lists me all the processess . The above command should ideally return only the processess that are running in the server. But even if the particular jvm process is not running/it has been stopped, it gives them as results as well.
Please adivse, How to check this.
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JSVC(1) Apache Commons Daemon project JSVC(1)
NAME
jsvc - application to launch java daemon
SYNOPSIS
jsvc [-jvm JVM name] [-client client JVM] [-server server JVM] [-classpath path] [-cp path] [-java-home directory] [-version] [-help] [-?]
[-nodetach] [-debug] [-check] [-user user] [-wait waittime] [-umask mask] [-stop] [-verbose:class|gc|jni]
[-outfile /full/path/to/file] [-errfile /full/path/to/file] [-pidfile /full/path/to/file] [-Dproperty=value] [-Xoption]
DESCRIPTION
jsvc executes classfile that implements a Daemon interface.
OPTIONS
-jvm JVM name
use a specific Java Virtual Machine.
-client client JVM
use a client Java Virtual Machine.
-server server JVM
use a server Java Virtual Machine.
-cp/ -classpath directory and zip/jar files
set search path for service classes and resouces
-java-home directory
set the path of your JDK or JRE installation (or set the JAVA_HOME environment variable)
-version
show the current Java environment version (to check correctness of -home and -jvm. Implies -nodetach)
-help
show this help page (implies -nodetach)
-nodetach
don't detach from parent process and become a daemon
-debug
verbosely print debugging information
-check
only check service (implies -nodetach)
-stop
stop the service using the file given in the -pidfile option
-wait waittime
wait up to waittime seconds for the service to start waittime should multiple of 10 (min=10)
-umask mask
sets the file mode creation mask
-user user
user used to run the daemon (defaults to current user)
-verbose[:class|gc|jni]
enable verbose output
-outfile /full/path/to/file
Location for output from stdout (defaults to /dev/null). Use the value '&2' to simulate '1>&2', or 'SYSLOG' to send output to the
system log.
-errfile /full/path/to/file
Location for output from stderr (defaults to /dev/null). Use the value '&1' to simulate '2>&1', or 'SYSLOG' to send output to the
system log.
-pidfile /full/path/to/file
Location for output from the file containing the pid of jsvc (defaults to /var/run/jsvc.pid)
-D<name>=<value>
set a Java system property
-X<option>
set Virtual Machine specific option
AUTHOR
JSVC is part of the Apache Commons Daemon project. Authors are Jean-Frederic Clere, Remy Maucherat, Yoav Shapira, Bill Barker, Mladen Turk.
JSVC is released under the Apache License Version 2.0.
Jsvc version 1.0.6 06/10/2014 JSVC(1)