kcptun install and systemd daemon

gistfile1.txt

# wget https://github.com/xtaci/kcptun/releases/download/v20170525/kcptun-linux-amd64-20170525.tar.gz
# tar xvf kcptun-linux-amd64-20170525.tar.gz
mv server_linux_amd64 /usr/local/bin/kcptun_server
mv /usr/local/bin/server_linux_amd64 /usr/local/bin/kcptun_server
sudo mkdir -p /etc/kcptun

sudo bash -c "cat <<EOT > /etc/kcptun/server_conf.json
{
    \"listen\": \":21\",
    \"target\": \"127.0.0.1:20001\",
    \"mode\": \"normal\",
    \"dscp\": 46,
    \"mtu\": 1200,
    \"crypt\": \"none\",
    \"nocomp\": true
}
EOT"

sudo bash -c "cat <<EOT > /etc/systemd/system/kcptun_server.service
[Unit]
Description=Kcptun server
Requires=network.target
After=network-online.target
    
[Service]
Type=simple
User=root
RemainAfterExit=yes
ExecStart=/usr/local/bin/kcptun_server -c /etc/kcptun/server_conf.json
ExecReload=/usr/bin/kill -HUP $MAINPID
RestartSec=1min
Restart=on-failure
    
[Install]
WantedBy=multi-user.target
EOT"

sudo systemctl enable kcptun_server
sudo systemctl start kcptun_server