Oracle 10g RMAN Delete archive log

export ORACLE_SID=
rman

RMAN > CONNECT TARGET /
RMAN > CROSSCHECK archivelog all;
RMAN > list archivelog all;
RMAN > delete archivelog until sequence=1236;

RMAN > Delete archivelog until time 'sysdate-1'; //Delete archive log before today

To Run RMAN in Scripts :

Prepare a sh script file & a command file :

sample script :
export ORACLE_SID={SID}
rman target / @cmdfile.txt


sample command file :
RUN {
delete archivelog until time 'sysdate-2';
}
EXIT;

Add the scripts to Crontab