iconv -f "UTF-8" -t "GBK" --unicode-subst=formatstring < ecs_instance_list_cn-shanghai_2018-04-09-3.csv > out.csv
iconv -f "UTF-8" -t "GBK" --unicode-subst=formatstring < ecs_instance_list_cn-shanghai_2018-04-09-3.csv > out.csv