Script to setup easily a server (Debian 10)

sysInstall.sh

#!/bin/sh

username=qt
password=CHANGE-THIS-OR-GESHI-WILL-BE-SAD

adduser --gecos "" --disabled-password $username
chpasswd <<<"$username:$password"
usermod -aG sudo qt
apt -y update
apt -y install ufw
ufw allow OpenSSH
sudo ufw --force enable
sudo apt -y update
sudo apt -y upgrade
sudo apt -y install nginx
sudo systemctl start nginx
sudo systemctl enable nginx
sudo ufw allow http
sudo chown www-data:www-data /usr/share/nginx/html/ -R
sudo apt -y install mariadb-server mariadb-client
sudo systemctl start mariadb
sudo systemctl enable mariadb

mysql -e "UPDATE mysql.user SET Password = PASSWORD('CHANGETHISLMFAO') WHERE User = 'root'"
mysql -e "DROP USER ''@'localhost'"
mysql -e "DROP USER ''@'$(hostname)'"
mysql -e "DROP DATABASE test"
mysql -e "FLUSH PRIVILEGES"

sudo apt -y install php7.3 php7.3-fpm php7.3-mysql php-common php7.3-cli php7.3-common php7.3-json php7.3-opcache php7.3-readline

sudo systemctl start php7.3-fpm
sudo systemctl enable php7.3-fpm

sudo rm /etc/nginx/sites-enabled/default
printf "server {\n  listen 80;\n  listen [::]:80;\n  server_name _;\n  root /usr/share/nginx/html/;\n  index index.php index.html index.htm index.nginx-debian.html;\n\n  location / {\n    try_files $uri $uri/ /index.php;\n  }\n\n  location ~ \.php$ {\n    fastcgi_pass unix:/run/php/php7.3-fpm.sock;\n    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;\n    include fastcgi_params;\n    include snippets/fastcgi-php.conf;\n  }\n\n # A long browser cache lifetime can speed up repeat visits to your page\n  location ~* \.(jpg|jpeg|gif|png|webp|svg|woff|woff2|ttf|css|js|ico|xml)$ {\n       access_log        off;\n       log_not_found     off;\n       expires           360d;\n  }\n\n  # disable access to hidden files\n  location ~ /\.ht {\n      access_log off;\n      log_not_found off;\n      deny all;\n  }\n}" > /etc/nginx/conf.d/default.conf

echo "Fuu~ Setup complete !"