18.04
sudo apt install shadowsocks-libev

OR 16.04
sudo apt-get install software-properties-common -y
sudo add-apt-repository ppa:max-c-lv/shadowsocks-libev -y
sudo apt-get update
sudo apt install shadowsocks-libev

optional:
sudo apt-get install simple-obfs

#################
vim /etc/sysctl.conf
    
net.ipv4.tcp_fastopen = 3
net.core.default_qdisc = fq
# 18.04 only
net.ipv4.tcp_congestion_control = bbr
#net.ipv4.tcp_congestion_control = hybla

sysctl -p

#################
mkdir -p /etc/shadowsocks-libev
vim /etc/shadowsocks-libev/config.json
{
    "server":["::0","0.0.0.0"],
    "server_port":443,
    "local_port":1080,
    "password":"xxx",
    "timeout":300,
    "method":"chacha20-ietf-poly1305",
    "fast_open":true
}

    "plugin": "obfs-server",
    "plugin_opts": "obfs=tls;obfs-host=itunes.apple.com"

    "plugin": "obfs-local",
    "plugin_opts": "obfs=tls;obfs-host=itunes.apple.com"
#################
# Restart
sudo systemctl restart shadowsocks-libev.service
# Start
sudo systemctl start shadowsocks-libev.service
# Stop
sudo systemctl stop shadowsocks-libev.service
# Log
journalctl -u shadowsocks-libev.service

#################
https://shadowsocks.org/en/download/clients.html

#################
Run as client on linux
ss-local -c /etc/shadowsocks-libev/config.json
journalctl -u shadowsocks-libev.service