setups a simple shadowsocks server

ss.sh

#!/bin/bash

# upgrade ubuntu and install snapd
sudo apt update && apt upgrade -y
sudo apt install -y snapd

sudo snap install shadowsocks-libev

# server configurations
sudo mkdir -p /var/snap/shadowsocks-libev/common/etc/shadowsocks-libev
sudo touch /var/snap/shadowsocks-libev/common/etc/shadowsocks-libev/config.json

tee -a  /var/snap/shadowsocks-libev/common/etc/shadowsocks-libev/config.json << END
{
   "server": "0.0.0.0",
   "mode":"udp",
   "server_port":8098,
   "local_port":1080,
   "password":"SomeSecurePassword-123",
   "timeout":300,
   "method":"chacha20-ietf-poly1305",
   "nameserver":"9.9.9.9,149.112.112.112"
}
END

# creating a service
sudo touch /etc/systemd/system/shadowsocks-libev-server@.service
tee -a /etc/systemd/system/shadowsocks-libev-server@.service << END
[Unit]
Description=Shadowsocks-Libev Custom Server Service for %I
Documentation=man:ss-server(1)
After=network-online.target
    
[Service]
Type=simple
ExecStart=/usr/bin/snap run shadowsocks-libev.ss-server -c /var/snap/shadowsocks-libev/common/etc/shadowsocks-libev/%i.json
    
[Install]
WantedBy=multi-user.target
END

# enableing service
sudo systemctl enable --now shadowsocks-libev-server@config
sudo ufw allow 8098