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backupDb.ksh

Creates a backup file from a MySQL database. The backup file will be a text file containing the SQL commands required to entirely recreate the database. Three files are generated from this script: the first is the backup file itself, the second is a capture of standard output, and the third is a capture of standard error.

Usage Statement
USAGE: backupDb.ksh <dbName> <dbHost> <dbUser> <dbPass> [<dbPort>] where dbName is the database to load dbHost is the host the database is running on dbUser is the user to login as dbPass is the password to use dbPort is the optional database port (defaults to 3306)

Sample Invokation
# ksh backupDb.ksh myDatabase localhost root myPass # ksh backupDb.ksh myDatabase localhost root myPass 3309

Source Code

#!/usr/local/bin/ksh
/**
* Copyright (c) 2008, Corey's Consulting LLC. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

###############################################################################
# check parameters

if [ $# -ne 4 -a $# -ne 5 ]
then
echo ""
echo " USAGE: $0 <dbName> <dbHost> <dbUser> <dbPass> [<dbPort>]"
echo ""
echo " where dbName is the database to backup"
echo " dbHost is the host the database is running on"
echo " dbUser is the user to login as"
echo " dbPass is the password to use"
echo " dbPort is the optional database port (defaults to 3306)"
echo ""

exit 1
fi

DB_NAME=$1
DB_HOST=$2
DB_USER=$3
DB_PASS=$4

if [ $# -eq 5 ]
then
DB_PORT=$5
else
DB_PORT=3306
fi

OUTFILE=backup.sql

###############################################################################
# backup database

echo -n " Backing up database ${DB_NAME}..."

mysqldump --user=${DB_USER} --password=${DB_PASS} -h ${DB_HOST} -P ${DB_PORT} \
-v --add-drop-database -r "${OUTFILE}" ${DB_NAME} \
> ${OUTFILE}.stdout 2>${OUTFILE}.stderr

if [ $? -ne 0 ]
then
echo " "
echo " --- MYSQL SERVER ERROR - POSSIBLY WRONG PASSWORD, OR USER NOT AUTHORIZED? ---"
echo " "
exit 1
fi

echo "done."

echo " Backup file: ${OUTFILE}"
echo " Standard Output: ${OUTFILE}.stdout"
echo " Standard Error : ${OUTFILE}.stderr"
echo " SUCCESS"

exit 0

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