mysql per database backup without mysql.event warning

mysql_backup

#!/bin/sh -

# The important part is not to put the password as an argument to the mysql
# commands, i.e. don't use the -p option. Instead use a .my.cnf file in the home
# dir of the user you are running this script as, i.e. /root/.my.cnf if running
# as root. Make the file readable for the owner only: chmod 400 /root/.my.cnf
# See: http://stackoverflow.com/questions/17829659/securing-backup-credentials-for-mysqldump/17844997#17844997

umask 007

renice 10 $$ >/dev/null

BACKUPPATH=/home/backup/last

for db in `mysql --batch --skip-column-names --execute="SHOW DATABASES" | egrep -v 'performance_schema|information_schema'`; do
  /usr/bin/nice /usr/bin/mysqldump --events --ignore-table=mysql.event --single-transaction --quick --extended-insert "$db" | gzip > "${BACKUPPATH}/mysql_${db}.sql.gz"
done

Ah, makes more sense now. Thank you