linux的shell脚本接收参数

#接收变量
for parm in "$@"
do
   key=`echo ${parm%%=*}`
   value=`echo ${parm#*=}`
   if [ $key == "--job_name" ];then
      export JOB_NAME=$value
   fi
   if [ $key == "--filename" ];then
      export FILENAME=$value
   fi
done