Script for install mariadb-backup and scripts for it(for Debian/Ubuntu)

mariadb_backup_scripts_install.bash

#!/bin/bash
curl -sS https://downloads.mariadb.com/MariaDB/mariadb_repo_setup | sudo bash
rm -rf /etc/apt/sources.list.d/mariadb.list.old*
apt update
apt -y install git mariadb-server mariadb-backup qpress
red=$'\e[1;31m'
grn=$'\e[1;32m'
yel=$'\e[1;33m'
blu=$'\e[1;34m'
mag=$'\e[1;35m'
cyn=$'\e[1;36m'
end=$'\e[0m'
MYSQL=`which mysql`
PASS=`tr -cd '[:alnum:]' < /dev/urandom | fold -w24 | head -n1`
printf "${cyn}MariaDB backup user password:${end} ${red}$PASS${end}\n\n"
Q0="DROP USER IF EXISTS 'backup'@'localhost';"
Q1="CREATE USER 'backup'@'localhost' IDENTIFIED BY '$PASS';"
Q2="GRANT RELOAD, LOCK TABLES, REPLICATION CLIENT, CREATE TABLESPACE, PROCESS, SUPER, CREATE, INSERT, SELECT ON *.* TO 'backup'@'localhost';"
Q3="FLUSH PRIVILEGES;"
SQL="${Q0}${Q1}${Q2}${Q3}"
$MYSQL -e "$SQL"
printf "[client]\nuser=backup\npassword=$PASS\n" >/etc/mysql/backup.cnf
cd /tmp
git clone https://github.com/Nill-R/debian-ubuntu-mariadb-backup.git
cd debian-ubuntu-mariadb-backup
chmod +x ./{backup,extract,prepare}-mysql.sh
sudo mv ./{backup,extract,prepare}-mysql.sh /usr/local/bin
cd ..
rm -rf debian-ubuntu-mariadb-backup
printf "\n${mag}Backup scripts install done${end}\n"