如何在shell中实现oracle rman的自动处理

lues

我每天都要在linux用oracle进行如下操作(很烦人)
RMAN>sql "Alter System Archive Log Current";
RMAN>backup database format='/data/oraclebackup/%U_%s.bak';
RMAN>sql "Alter System Archive Log Current";
RMAN>backup filesperset 10 archivelog all delete input format='/data/oraclebackup/%U_%s.bak';
RMAN>report obsolete;
然后再根据report obsolete;信息调用rm命令删除过期的rman备份文件，比如02fusm9a_1_1_2.bak

删除了这些过期备份文件以后，再执行
RMAN> allocate channel for maintenance type disk;
RMAN> crosscheck backup;
RMAN> delete expired backup;
RMAN> RELEASE CHANNEL;

请问我的这些操作该怎么用shell脚本实现自动操作？