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Cheatsheets
SYS://REFERENCE/CHEATSHEETS · 74 SHEETS

Cheatsheet Portal

Practical, battle-tested command references for Linux systems, networking, firewalls, containers, databases, and server operations. Use the top search bar to filter instantly.

01

Linux System

Kernel, systemd, disk partitioning, LVM, and OS maintenance.
Arch Linux
/archlinuxspec
Linux Disk & Storage Management
/linux-disk-managementspec
Linux Server Administration
/linux-serverspec
LVM Storage Management
/lvmspec
Systemd
/systemdspec
Termux
/termuxspec
02

Shell & CLI Tools

Shells, text processors, editors, and terminal multiplexers.
Bash
/bashspec
cURL
/curlspec
Fish
/fishspec
Grep & Find
/grep-findspec
Neovim (Nvim)
/nvimspec
Sed & Awk
/sed-awkspec
Tmux
/tmuxspec
Vim
/vimspec
Zip & Tar Archiving
/zip-tarspec
Zsh
/zshspec
03

Network & Security

Firewalls, VPNs, routing, certificates, DNS, and tunneling.
BIND
/bindspec
Certbot
/certbotspec
Cloudflared (Cloudflare Tunnel)
/cloudflaredspec
Fail2Ban
/fail2banspec
Firewalld
/firewalldspec
IPSet
/ipsetspec
Iptables
/iptablesspec
Linux Networking Tools
/linux-networking-toolsspec
Netplan
/netplanspec
Nftables
/nftablesspec
OpenSSL
/opensslspec
pfSense (FreeBSD)
/pfsensespec
PowerDNS
/powerdnsspec
SSH
/sshspec
UFW (Uncomplicated Firewall)
/ufwspec
WireGuard
/wireguardspec
04

Infra & Containers

Virtualization, container engines, and CI/CD automation.
AWS CLI
/aws-clispec
Docker
/dockerspec
GitHub Actions
/github-actionsspec
Kubernetes (kubectl)
/kubernetesspec
Proxmox VE
/proxmoxspec
05

Mail & Directory

Mail transfer agents, spam filtering, sync, and directory services.
FreeIPA
/freeipaspec
Imapsync
/imapsyncspec
LDAP
/ldapspec
Mail Operations (Postfix)
/mail-opsspec
Nginx Mail Proxy (`ngx_mail_core_module`)
/nginx-mail-proxyspec
Proxmox Mail Gateway (PMG)
/pmgspec
06

Storage & Backup

Remote cloud storage, deduplicated backups, and personal cloud.
Nextcloud
/nextcloudspec
ownCloud
/owncloudspec
Rclone
/rclonespec
Restic
/resticspec
Rsync
/rsyncspec
07

Web & App Servers

HTTP reverse proxies, application runtimes, and log analysis.
Apache HTTP Server
/apachespec
Bun
/bunspec
Deno
/denospec
GoAccess
/goaccessspec
Nginx
/nginxspec
Node.js
/nodejsspec
PM2
/pm2spec
Python
/pythonspec
Yarn
/yarnspec
08

Databases

Relational, document, and in-memory key-value stores.
MongoDB
/mongodbspec
MySQL / MariaDB
/mysqlspec
PostgreSQL
/postgresqlspec
Redis
/redisspec
09

Static Sites & Frameworks

Static site generators, markdown documentation, and build tooling.
Hexo
/hexospec
Hugo
/hugospec
Jekyll
/jekyllspec
Markdown
/markdownspec
10

Dev & AI

Version control and local LLM runtime management.
Git
/gitspec
Ollama (Local LLM)
/ollama-llmspec
11

Windows & Web3

PowerShell, WSL, package managers, and blockchain CLI toolchains.
Ethereum CLI (Geth & Cast)
/ethereum-clispec
NEAR CLI
/near-clispec
PowerShell
/powershellspec
Solana CLI
/solana-clispec
Windows CMD
/cmdspec
Windows Package Manager
/windows-package-managerspec
WSL (Windows Subsystem for Linux)
/wslspec