I now and again add/delete websites and their subsequent databases too my server(s). I use the following script to backup the databases. Using this I don’t have to worry about remembering to change the script to capture a database or to stop looking for a database. The script (which runs as root) learns the databases from mysql just before doing the backups.
#!/bin/sh cd backups/ for DB in `echo "show databases;" | mysql| grep -v ^Database`; do mysqldump --add-drop-table $DB |bzip2 -c > $DB.`date -u +%Y%m%d-%H:%M:%S`.sql.bz2 done