linux java sh

#! /bin/sh

 

if [ -z "$JAVA_HOME" ] ; then

export JAVA_HOME=/usr/local/java

fi

 

 

SCRIPT="$0"

while [ -h "$SCRIPT" ] ; do

  ls=`ls -ld "$SCRIPT"`

  # Drop everything prior to ->

  link=`expr "$ls" : '.*-> \(.*\)$'`

  if expr "$link" : '/.*' > /dev/null; then

    SCRIPT="$link"

  else

    SCRIPT=`dirname "$SCRIPT"`/"$link"

  fi

done

 

SERVER_HOME=`dirname "$SCRIPT"`

SERVER_HOME=`cd "$SERVER_HOME" ; cd .. ; pwd`

export SERVER_HOME

 

LIBDIR=$SERVER_HOME/lib

 

CLASSPATH=${CLASSPATH}:${SERVER_HOME}/conf

 

for lib in ${LIBDIR}/*.jar

do

 CLASSPATH=$CLASSPATH:$lib

done

 

java=$JAVA_HOME/bin/java

 

JAVA_OPTS="

-Xmx1G

-Xms1G

-XX:PermSize=128M

-XX:MaxPermSize=256M

-XX:+UseConcMarkSweepGC

-XX:+UseParNewGC

-XX:+CMSConcurrentMTEnabled

-XX:+CMSParallelRemarkEnabled

-XX:+UseCMSCompactAtFullCollection

-XX:CMSFullGCsBeforeCompaction=0

-XX:+CMSClassUnloadingEnabled

-XX:LargePageSizeInBytes=128M

-XX:+UseFastAccessorMethods

-XX:+UseCMSInitiatingOccupancyOnly

-XX:CMSInitiatingOccupancyFraction=80

-XX:SoftRefLRUPolicyMSPerMB=0

-XX:+PrintClassHistogram

-XX:+PrintGCDetails

-XX:+PrintGCTimeStamps

-XX:+PrintHeapAtGC

-Xloggc:/data/logs/gc.log

-XX:+HeapDumpOnOutOfMemoryError

-XX:HeapDumpPath=/data/logs/dump.hprof

"

 

echo "JAVA_HOME  :$JAVA_HOME"

echo "SERVER_HOME:$SERVER_HOME"

echo "CLASSPATH  :$CLASSPATH"

echo "JAVA_OPTS  :$JAVA_OPTS"

 

cd $SERVER_HOME

 

exec  $java -classpath  $CLASSPATH  $JAVA_OPTS com.XX.XX.bootstrap