Tutorials

Concise tutorials for every xyz.sh script: install Docker, enable BBR, add swap, set a firewall or timezone, plus benches, speed tests, and back-route checks. Steps match the scripts; no fabricated benchmarks.

Install Docker Tutorial (Official Script on Debian, Ubuntu, CentOS)

This tutorial shows how to install Docker Engine on a Linux VPS with xyz.sh/docker. The install is performed by the official get.docker.com script; xyz.sh only previews and confirms it.
Enable BBR Tutorial (TCP BBR on Debian, Ubuntu, CentOS)

This tutorial shows how to enable in-tree TCP BBR on a Linux VPS with xyz.sh/bbr. It only changes sysctl settings, does not replace the kernel, and does not claim any speed-up or benchmark result.
Add Swap on a VPS (Chosen Size, Persisted in fstab)

This tutorial shows how to create and persist a swap file on a Linux VPS with xyz.sh/swap, and how to remove it safely.
VPS Benchmark Tutorial (YABS Wrapper, No Fabricated Scores)

This tutorial shows how to benchmark a VPS with xyz.sh/bench. The default path wraps open-source YABS; --local is a rough test that downloads no third-party tools. This page does not publish or invent scores.
VPS System Info Tutorial (Read-Only, No Public IP Lookup)

This tutorial shows how to take a read-only snapshot of a Linux VPS with xyz.sh/sysinfo. The script does not change the system or look up a public IP.
Install the Nezha Agent (Official Script and Environment Variables)

This tutorial shows how to invoke the official Nezha agent installer with xyz.sh/nezha. Use the real connection values from your own Dashboard; do not connect with sample values from the docs.
VPS Speedtest Tutorial (Official Ookla CLI)

This tutorial shows how to install the official Ookla Speedtest CLI with xyz.sh/speedtest and run one test. The test contacts Ookla servers and is subject to Ookla's own terms.
VPS Back-Route Tutorial (NextTrace / traceroute)

This tutorial shows how to inspect a VPS route to several public resolvers with xyz.sh/route. Official NextTrace is preferred; the script can fall back to system traceroute.
VPS Firewall Tutorial (UFW / firewalld, SSH Allowed First)

This tutorial shows how to apply a basic host firewall with xyz.sh/firewall (alias ufw). Confirm the detected SSH port before enabling it, or you may lose access.
Linux Timezone Tutorial (timedatectl and Locale)

This tutorial shows how to set the system timezone—and optionally the locale—with xyz.sh/timezone (aliases tz, locale).
Experimental China 3-Network Speedtest Tutorial

This tutorial shows how to attempt China Telecom / Unicom / Mobile nodes with the experimental xyz.sh/speedtest-cn script. The test often cannot finish from outside the mainland; for everyday use run xyz.sh/speedtest --overseas or xyz.sh/all.
One-Shot VPS Test Tutorial (with Shareable Results)

This tutorial shows how to run the usual checks on a new VPS in one go with xyz.sh/all and share the summary with others.
VPS Streaming Unlock Check Tutorial (with IP Quality)

This tutorial shows how to check streaming and AI service availability for a VPS IP with xyz.sh/unlock, and whether the IP looks datacenter or residential.
Fail2ban SSH Protection Tutorial

This tutorial shows how to enable Fail2ban auto-banning for SSH on a VPS with xyz.sh/fail2ban.
SSH Hardening Tutorial: Port Change and Key Login

This tutorial walks through hardening SSH on a VPS with xyz.sh/ssh without locking yourself out.
Automatic Security Updates Tutorial for a VPS

This tutorial shows how to make a VPS install security updates automatically with xyz.sh/autoupdate.
BT Panel (Baota) Installation Tutorial

This tutorial shows how to install BT Panel through its official script with xyz.sh/bt.
aaPanel Installation Tutorial (Official Script)

This tutorial shows how to install aaPanel with xyz.sh/aapanel.
1Panel Installation Tutorial (Official Script)

This tutorial shows how to install the open-source 1Panel with xyz.sh/1panel.
WireGuard Server Setup Tutorial

This tutorial shows how to set up a WireGuard server on a VPS with xyz.sh/wireguard and connect clients.
Caddy Reverse Proxy and Automatic HTTPS Tutorial

This tutorial shows how to install Caddy with xyz.sh/caddy and reverse-proxy a domain with automatic HTTPS.