Files older than 1 day

find /rman/arch/*.dbf -mtime +1 -exec mv {} /rman/archbkp/ \;

Move files older than 25 hours

find /rman/arch/*.dbf -mmin +1500 -exec mv {} /rman/archbkp/ \;

List files older than 2hours

find /rman/arch/*.dbf -mmin +120 -exec ls -ltr {} \;

Delete files older than 1 day

find /rman/arch/*.dbf -mtime +1 -exec rm {} \;

Delete files older than 1 hours

find /rman/arch/*.dbf -mmin +60 -exec rm {} \;