Shell Script To Delete Old Archives Using RMAN

cat arch_del.sh
#!/bin/bash
export ORACLE_HOME=/oracle/app/oracle/product/12.1.0.2.0
export ORACLE_SID=PARIS12C
export PATH=$ORACLE_HOME/bin:$PATH
delBackup () {
rman log=/home/oracle/arch_del.log << EOF
connect target /
DELETE noprompt ARCHIVELOG ALL COMPLETED BEFORE ‘sysdate-1’;
CROSSCHECK ARCHIVELOG ALL;
DELETE EXPIRED ARCHIVELOG ALL;
exit
EOF
}
# Main
delBackup