shell动态执行mongo命令

#!/bin/sh
#set -x

tmp=
log_filepath=run.log
pid_name=mongo_sh.pid
mongodb_home=/root/mongo
mongodb_sh=mongo_exec.sh
mongodb_cmd="$mongodb_home/bin/mongo localhost:30000/uc"
function usage(){
   echo "Usage: $0 start"
   echo "options:"
   echo "   start    --start mongodb clear server service"
   echo "   help     --dispaly mongodb clear server help"
}

function start(){
   if [ $# != 1 ]; then
      echo "Input error. Please input $0 start"
      usage
      exit 1
   fi

   if [ ! -d $mongodb_home ]; then
      echo "The mongodb_home $mongodb_home doesn't exist,please make sure the install path is correct."
      exit 1
   fi
  
   if [ ! -f $log_filepath ]; then
      touch $log_filepath
   fi
  
   tmp=`ps -ef | grep mongo_run|grep start | wc -l`
   if [ $tmp -gt 2 ]; then
      echo "The server arealdy started..."
      exit 1
   fi
  
   echo "$mongodb_cmd << END_CMD " >$mongodb_sh
   echo "db.repairDatabase()" >> $mongodb_sh
   echo "exit" >> $mongodb_sh
   echo "END_CMD" >> $mongodb_sh
   chmod +x $mongodb_sh
   echo "server is running ,please wait..."
   date -d today +"%Y-%m-%d %H:%M:%S" >> $log_filepath
   ./$mongodb_sh >> $log_filepath 2>&1 &
   echo "It's ok. [Finish]"
   exit 1
}

case $1 in
   start)
      start $@
   ;;
   help|*)
      usage $@
    ;;
esac

exit $?