backupDB.sh

#!/bin/bash
# Backup database from console
DATABASE=
DEFAULTS_FILE=$DATABASE.cnf
BACKUP_DIR=

DB_OUT_FILENAME=$DEFAULTS_FILE-`date +\%Y\%m\%d`.sql.gz
mysqldump --defaults-extra-file=$DEFAULTS_FILE $DATABASE 2>> cron.log | gzip - > $BACKUP_DIR/$DB_OUT_FILENAME

MYDB.cnf

[client]
host=
user=
password=
database=

truncateTables.sh

#!/bin/bash
# Truncate database tables from console
DATABASE=
DEFAULTS_FILE=$DATABASE.cnf

mysql --defaults-extra-file="$DEFAULTS_FILE" -Nse 'show tables' $DATABASE | while read table; do mysql --defaults-extra-file="$DEFAULTS_FILE" -e "truncate table $table" DATABASE; done