Denie's Tech Blog

This is what I’m currently using on “sendmail.mc”. So far quite good and I can blast around 100K emails within few hours. Enjoy! Read more …

# Copyright (c) 2001 Sendmail, Inc. and its suppliers.
# All rights reserved.
#
# By using this file, you agree to the terms and conditions set
# forth in the LICENSE file which can be found at the top level of
# the sendmail distribution.
#
# $Id: TUNING,v 1.16 2001/08/19 21:03:38 gshapiro Exp $
# Read more …

0) Backup your database.
You should probably be doing this already.  Now’s a good time to make sure that your backups ran.

1) Create the script.
You’ll need the correct permissions to query the database. Here’s the command.  Be sure to change <DATABASE_NAME> as it fits.

# mysql -p -e "show tables in <DATABASE_NAME>;" | \
tail --lines=+2 | \
xargs -i echo "ALTER TABLE {} ENGINE=INNODB;" > alter_table.sql

2) Run the script.

# mysql --database=<DATABASE_NAME> -p < alter_table.sql

3) Verify it by running this command in mysql:

mysql> show table status;

Read more …

/usr/local/bin/mysql.backup.sh

#!/bin/bash
NOW=$(date +"%m-%d-%Y")
OLD=$(date +"%m-%d-%Y" --date="3 days ago")
PROJECT="project_name"
LOCATION="/home/backup"
FILE="$PROJECT.$NOW.sql"
FILE2="$FILE.gz"
FILEOLD="$PROJECT.$OLD.sql.gz"
EMAIL="youremail@domain.com"
$SQLUSER="username"
$SQLPASS="password"
$SQLNAME="database_name"

cd $LOCATION ; \
rm -f $FILEOLD ; \
mysqldump -u $SQLUSER --password=$SQLPASS $SQLNAME > \
$LOCATION/$FILE ; \
gzip $LOCATION/$FILE ; \
echo "Backup location is in $LOCATION/$FILE2" | \
mail -s "[$PROJECT] MySQL Backup" $EMAIL

Then you can put it on your cron (background process)

Below cron will execute the script on Saturday at 12AM:

0 0 * * 6 /usr/local/bin/mysql.backup.sh

Good luck!

When invoked without arguments, the date command displays the current date and time. Depending on the options specified, date will set the date and time or print it in a user defined way. I’ve seen many people writing a perl script for calculating yesterday or tomorrow. Computer loves numbers but we love relative terms like 2 days ago. Luckily GNU date command is designed to handle relative date calculation. Read more …