shell 根据 PPID 获取 PID

PRID=`ps -ef|grep "program"|grep -v grep|sort -k2|awk '{print $2}'`
if [ -z "$PRID" ]
then
   exit 0
else
   ps -ef|awk '{if($3=='"$PRID"'){system("kill -9 "$2)} }'
fi