create project, add prototype files

README.md

+![Logo of the project](https://raw.githubusercontent.com/jehna/readme-best-practices/master/sample-logo.png)
+
+# Automated SQL Backup Script
+
+A simple bash script, to automatically create sql dumps on a daily basis, scheduled by systemd.
+It comes with a built in mechanism to check and delete old backups.
+
+## Installing / Getting started
+
+Clone the repository and execute the install script.
+
+```shell
+git clone https://git.slub-dresden.de/dbod/sql-backup.git
+cd sql-backup
+sudo bash install.sh
+systemctl enable sql-backup.service
+```
+
+After the repository is cloned, the install script is executed. The script first checks for repository updates.
+After that it is copying the systemd service files (.service and .timer) to the systemd path.
+It then edits the .service file with sed, to properly define the path to the backup script.
+
+### Initial Configuration
+
+The backup script needs an SQL User, capable to lock and dump the databases, which should be backuped.
+In the standard configuration, the script trys to backup every single database on the server "localhost",
+using the user "root" without a password. This will most probably result in an error.
+
+## Developing
+
+To participate in the development of the project, you just need to clone the repository.
+
+```shell
+git clone https://git.slub-dresden.de/dbod/sql-backup.git
+cd sql-backup
+```
+
+## Features
+
+What's all the bells and whistles this project can perform?
+* What's the main functionality
+* You can also do another thing
+* If you get really randy, you can even do this
+
+## Configuration
+
+Here you should write what are all of the configurations a user can enter when
+using the project.
+
+#### Argument 1
+Type: `String`
+Default: `'default value'`
+
+State what an argument does and how you can use it. If needed, you can provide
+an example below.
+
+Example:
+```bash
+awesome-project "Some other value"  # Prints "You're nailing this readme!"
+```
+
+#### Argument 2
+Type: `Number|Boolean`
+Default: 100
+
+Copy-paste as many of these as you need.
+
+## Contributing
+
+"If you'd like to contribute, please fork the repository and use a feature
+branch. Pull requests are warmly welcome."
+
+## Links
+
+- Repository: https://git.slub-dresden.de/dbod/sql-backup
+- Issue tracker: https://git.slub-dresden.de/dbod/sql-backup/-/issues
+  - In case of sensitive bugs like security vulnerabilities, please contact
+    hannes.braun@email.com directly instead of using issue tracker. We value your effort
+    to improve the security and privacy of this project!
+- Related projects:
+  - Template for the README.md: https://github.com/jehna/readme-best-practices
+
+
+## Licensing
+
+"The code in this project is licensed under MIT license."

sql-backup.service

+[Unit]
+Description=Create sql backup and delete backups older then specified (in script) days
+Wants=sql-backup.timer
+
+[Service]
+Type=oneshot
+ExecStart=./sql-backup.sh
+
+[Install]
+WantedBy=multi-user.target

sql-backup.sh

+#!/bin/bash
+export PATH=/bin:/usr/bin:/usr/local/bin
+
+today=$(date +"%y%m%d")
+
+sqlHost="localhost"
+sqlPort="3306"
+sqlUser="backup"
+sqlPass="l)m0h4vtJ@D7*f5YOvLO5c=0g?4K3aEM"
+dbName="booked_prod"
+backupPath="/var/backups/sql/"$dbName
+backupRetainDays=30
+
+mkdir -p ${backupPath}
+cd $backupPath
+
+mysqldump -h ${sqlHost} \
+  -P${sqlPort} \
+  -u${sqlUser} \
+  -p${sqlPass} \
+  ${dbName} > ${backupPath}/${dbName}-${today}.sql
+
+if [ $? -eq 0 ]; then
+  echo "Database backup successfully completed"
+else
+  echo "Error found during backup"
+fi
+
+delDate=$(date +"%y%m%d" --date="${BACKUP_RETAIN_DAYS} days ago")
+delFile=${dbName}-${delDate}.sql
+
+for f in *
+do
+  if [[ "$f" < "$delFile" ]]
+  then
+    echo "delete $f"
+    rm -f $f
+  else
+    echo "keep $f"
+  fi
+done

sql-backup.timer

+[Unit]
+Description=Execute sql-backup.service on a daily basis.
+Requires=sql-backup.service
+
+[Timer]
+Unit=sql-backup.service
+OnCalendar=*-*-* 12:00:00
+
+[Install]
+WantedBy=timers.target