how to start GC logs?

hello

i was reading this article

http://www.jivesoftware.com/jive/entry.jspa?externalID=701

and i wanted to track my GC logs.

we start our jvm using this script. can someone please tell me what arguments would i need to and how i would edit this script to start the JVM in verbose mode or start GC logs

PLATFORM=`/bin/uname`

case $PLATFORM in

AIX)

EXTSHM=ON

LIBPATH="$WAS_LIBPATH":$LIBPATH

export LIBPATH EXTSHM ;;

Linux)

LD_LIBRARY_PATH="$WAS_LIBPATH":$LD_LIBRARY_PATH

export LD_LIBRARY_PATH ;;

SunOS)

LD_LIBRARY_PATH="$WAS_LIBPATH":$LD_LIBRARY_PATH

export LD_LIBRARY_PATH ;;

HP-UX)

SHLIB_PATH="$WAS_LIBPATH":$SHLIB_PATH

export SHLIB_PATH ;;

esac

"$JAVA_HOME"/bin/java \

$DEBUG \

-Dws.ext.dirs="$WAS_EXT_DIRS" \

-classpath"$WAS_CLASSPATH" \

-Dwas.install.root="$WAS_HOME" \

-Dibm.websphere.preload.classes=true \

$USER_INSTALL_PROP \

com.ibm.ws.bootstrap.WSLauncher \

$SHELL"$CONFIG_ROOT""$WAS_CELL""$WAS_NODE""$@"

[1480 byte] By [bhaarat_javaa] at [2007-11-15]