Response file for Manual Recovery using sqlplus.

 Hello,
I would like to pass input from a file to sqlplus similar to an install response file. what I'm trying to achieve is to automate manual recovery.

e.g.

SQL> recover database using backup controlfile until cancel;
				

I want to pass "cancel" from a response file to sqlplus to cancel the recovery. Is this possible ?
				
I wish to Backup the database from the split mirror disk and as per Metalink note "RMAN and Split Mirror Disk Backups [ID 302615.1]"
				
I have to cancel an incomplete recovery to backup up the database.
				

				
Thanks in advance