Delete old files in a folder automatically

autodel.sh

#!/bin/bash -eu
# for crontab

FILEDIR=/path/to/dir
LOGFILE=/var/log/autodel.log
DAYS=200
PROCESSES=4
CHUNK=10

# delete files older than 200 days & parallelize
/usr/bin/find $FILEDIR -daystart -mtime +$DAYS -type f | /usr/bin/xargs -P$PROCESSES -n$CHUNK /bin/rm -f
/bin/echo "`/bin/date --rfc-3339='date'`: deleted files older than $DAYS days" >> $LOGFILE