问0403-057第21行出现语法错误:不需要‘`fi’

EN

#!/bin/sh

CWD=`pwd`
LAUNCH_DIRECTORY=`eval dirname $0`
cd $LAUNCH_DIRECTORY
LAUNCH_DIRECTORY=`pwd`
cd $CWD

if [ -d "${LAUNCH_DIRECTORY}/java/bin" ]; then
  JAVA_HOME=${LAUNCH_DIRECTORY}/java
fi

if [ "${JAVA_HOME}" != "" ]; then
  PATH=${JAVA_HOME}/bin:${PATH}
fi

JAVA_VERSION=$(java -version 2>&1 | grep -i version | \
               cut -d'"' -f2 | cut -         d'.' -f2)

if [ -z "${JAVA_VERSION}" ] || [ "${JAVA_VERSION}" -lt 8 ]; then
  YAB_JAVA_OPTS="-XX:MaxPermSize=256m ${YAB_JAVA_OPTS}"
fi

export TERM=xterm

java ${YAB_JAVA_OPTS} \
     -Dlaunch.dir="${LAUNCH_DIRECTORY}" \
     -jar "${LAUNCH_DIRECTORY}/lib/yab-loader.jar" ${YAB_OPTS} ${1+"$@"}