# ps -ef|grep tomcat_community|grep -v 'grep'|awk '{print $2}' # 这里的-f参数判断$myFile是否存在 pidfile=java.pid if [ ! -f "$pidfile" ]; then touch ${pidfile}; echo "$pidfile new create finish"; fi # $! 后台运行的最后一个进程的进程ID号 trap "" 1 2 3 24 while true do if [ -z $(cat $pidfile) ] ; then echo "$pidfile is empty"; fi; pid=$(ps -ef|grep java|grep lf-lfzb.jar|grep $(cat $pidfile)|awk '{print $2}') echo "current mode lf-lfzb.jar java pid value is " $pid; if [ "$pid" != $(cat $pidfile) ] ; then #./shutdown.sh /opt/jdk/bin/java -jar lf-lfzb.jar -Dfile.encoding=UTF-8 >>/dev/null & echo $! > ${pidfile} fi sleep 5 #break done