$ more delete_archive_log.sh
. ~/.profile
rman target / <<EOF
crosscheck archivelog all;
#delete noprompt obsolete;
delete noprompt expired archivelog all;
delete noprompt force archivelog all completed before 'sysdate - 10';
exit;
EOF
$
$ crontab -l
00 00 * * * /home/oracle/delete_archive_log.sh >>/home/oracle/delete_archive_log.txt
$