linux-server-tools/sqldumps/sqldumps.sh

#!/bin/bash

## SQLDump Script
## Author: Ze'ev Schurmann
## Reddit: u/thisiszeev
## License: GPL-3.0 or later


## This script creates a list of all databases in MySQL or MariaDB and then adds to then
## list all the unwanted databases. It then creates a list of unique names which are the
## databases to be backed up. (If you have a root password for MySQL or MariaDB then you
## may need too include it in the code.)

## Place this script in the folder /var/sqldumps

## It's a good idea to run this in as a cron tab. Then you can time a remote backup from
## another server/machine.

## Crontab example: (excluding the ##)

## 0 22    * * *   root    cd /var/sqldumps && bash sqldumps.sh

## Please consider making me small donation. Even though my scripts are open source and free to use, I still need to eat. And the
## occasional bottle of wine also goes down well.
## $5 buys me a cup of coffee
## $10 buys me a nice burger
## $20 buys me a bottle of wine
## Anything above that will be awesome as well.
## You can send me a donation via Paypal https://www.paypal.com/paypalme/thisiszeev
## Drop me a message on Reddit if you do make a donation.
## Support is only offered freely to those who donate $20 or more.
## Your donation contributes to further development.
## If you need a custom script, contact me on Reddit for pricing.



## Put the names of the databases you do not want to backup in the following array.

ignorelist=("mysql" "performance_schema" "dbispconfig" "phpmyadmin" "roundcube")


## Put the location for the SQL Dumps

dumppath="/var/sqldumps"


## MySQL Credentials

## If the username is left blank (null) then no MySQL login will be attempted.
## If the password is left blank (null) then no Password will be used in the login attempt.

sqlusername="root"
sqlpassword="djhfasdghfkjlahsdfjkh"


## Determines login method.

if [[ -z $sqlusername ]]
then
  sqlup=""
else
  if [[ -z $sqlpassword ]]
  then
    sqlup="-u $sqlusername"
  else
    sqlup="-u $sqlusername -p$sqlpassword"
  fi
fi


## Removes previous SQL dumps and list files.

rm -f *.sql
rm -f *.list


## Creates a list file of all the databases.

mysql $sqlup -e "show databases" | grep -Ev 'Database|information_schema' > db.list


## Add a list of the unwanted databases to the list file.

for ((n=0; n<${#ignorelist[@]}; n++))
do
  echo ${ignorelist[$n]} >> db.list
  echo ${ignorelist[$n]} >> db.list
done


## Generate a list of the databases to be backed up and pass it line by line
## into a while loop, exporting each database to dbname.sql

sort db.list | uniq -u | while read -r dbname; do
  echo "Dumping $dbname to $dumppath/$dbname.sql"
  mysqldump $sqlup $dbname > "$dumppath/$dbname.sql"
done

rm db.list