一个shell脚本

if [ -d /home/apache-tomcat-7.0.21/webapps/trs ]; then        if [ -d /home/apache-tomcat-7.0.21/webapps/trs.backup ];then                rm -rf /home/apache-tomcat-7.0.21/webapps/trs.backup        fi        mv  /home/apache-tomcat-7.0.21/webapps/trs /home/apache-tomcat-7.0.21/we                                                                             bapps/trs.backupfiPID=`ps -ef | grep 'catalina' | grep -v 'grep' | awk '{print $2}'`if [ -z $PID ]; then        echo "no catalina PID"else        sh /home/apache-tomcat-7.0.21/bin/shutdown.shfirm -rf ./trs.warecho "rm trs.war"exit 0