shell 不太熟..写了个出了点小问题..谁帮忙看下

Question

#!/bin/sh
usage()
{
echo"Usage:启动配置参数"
echo"可定制参数onlineorniusmallnan"
}
if(($#==0))
then
usage
exit
fi
cdservices
psaux|grepmsx_apns|grep-v'grep'|awk'{print$2}'|xargskill-s9
case$1in
online)
nohup./msx_apns_service.py../conf/apns_config_online.py>/dev/null&
;;
niusmallnan)
nohupmypythonmsx_apns_service.py../conf/apns_config_niusmallnan.py>/dev/null&
;;
*)
usage
exit0
esac运行后有个小报错：
./apns_service.sh:15:0:notfound
就是fi那行但是即便如此后面的语句也都执行了..
对shell不太熟..谁给看下