bak-mysql.sh
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	dereckson
	Oct 26 2024, 23:42

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bak-mysql.sh
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	#!/bin/sh

	# -------------------------------------------------------------
	# Backup MariaDB or MySQL databases
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
	# Project: Nasqueron
	# License: BSD-2-Clause
	# -------------------------------------------------------------

	set -e

	BACKUP_DIR=/var/backups/db

	# -------------------------------------------------------------
	# Ensure user is root
	#
	# Note: POSIX shells don't always define $UID or $EUID.
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

	if [ "${EUID:-$(id -u)}" -ne 0 ]; then
	echo "This command must be run as root." >&2
	exit 1
	fi

	# -------------------------------------------------------------
	# Collect information
	#
	# :: Databases to dump
	# :: Timestamp
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

	DATABASES=$(mysql -Ns -e "show databases" \| grep -v -E 'information_schema\|performance_schema\|mysql-innodb-')
	SUBDIR=$(hostname -s)-$(date +"%s")

	mkdir "$BACKUP_DIR/$SUBDIR"

	for database in $DATABASES; do
	mysqldump $database \| gzip > "$BACKUP_DIR/$SUBDIR/$database.sql.gz"
	done