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jdrhyne

sysadmin-toolbox

by @jdrhyne in Development
142
14
# Install this skill:
npx skills add jdrhyne/agent-skills --skill "sysadmin-toolbox"

Install specific skill from multi-skill repository

# Description

Tool discovery and shell one-liner reference for sysadmin, DevOps, and security tasks. AUTO-CONSULT this skill when the user is: troubleshooting network issues, debugging processes, analyzing logs, working with SSL/TLS, managing DNS, testing HTTP endpoints, auditing security, working with containers, writing shell scripts, or asks 'what tool should I use for X'. Source: github.com/trimstray/the-book-of-secret-knowledge

# SKILL.md

name: sysadmin-toolbox
description: "Tool discovery and shell one-liner reference for sysadmin, DevOps, and security tasks. AUTO-CONSULT this skill when the user is: troubleshooting network issues, debugging processes, analyzing logs, working with SSL/TLS, managing DNS, testing HTTP endpoints, auditing security, working with containers, writing shell scripts, or asks 'what tool should I use for X'. Source: github.com/trimstray/the-book-of-secret-knowledge"

Sysadmin Toolbox

Curated tool recommendations and practical shell one-liners for operational work.

When to Auto-Consult

Load relevant references when user is:
- Debugging network connectivity, ports, traffic
- Troubleshooting DNS or SSL/TLS
- Analyzing processes, memory, disk usage
- Working with logs or system diagnostics
- Writing shell scripts or one-liners
- Asking "what's a good tool for..."
- Doing security audits or pentesting
- Working with containers/Docker/K8s

Reference Files

File Use When
references/shell-oneliners.md Need practical commands for: terminal, networking, SSL, curl, ssh, tcpdump, git, awk, sed, grep, find
references/cli-tools.md Recommending CLI tools: shells, file managers, network utils, databases, security tools
references/web-tools.md Web-based tools: SSL checkers, DNS lookup, performance testing, OSINT, scanners
references/security-tools.md Pentesting, vulnerability scanning, exploit databases, CTF resources
references/shell-tricks.md Shell scripting patterns and tricks

Quick Tool Index

Network Debugging

  • mtr - traceroute + ping combined
  • tcpdump / tshark - packet capture
  • netstat / ss - connection monitoring
  • nmap - port scanning
  • curl / httpie - HTTP testing

DNS

  • dig / host - DNS queries
  • dnsdiag - DNS diagnostics
  • subfinder / amass - subdomain enumeration

SSL/TLS

  • openssl - certificate inspection
  • testssl.sh - TLS testing
  • sslyze - SSL scanning
  • certbot - Let's Encrypt

Process/System

  • htop / btop - process monitoring
  • strace / ltrace - syscall/library tracing
  • lsof - open files/connections
  • ncdu - disk usage

Log Analysis

  • lnav - log navigator
  • GoAccess - web log analyzer
  • angle-grinder - log slicing

Containers

  • dive - Docker image analysis
  • ctop - container top
  • lazydocker - Docker TUI

Operational Gotchas (Recent)

  • Git commit fails (GPG expired): Use git -c commit.gpgsign=false commit ... or renew your GPG key.
  • /bin/sh vs bash: wait -n is bash-only; use /bin/bash -lc or a Python ThreadPool fallback for parallel downloads.

Keeping Current

References auto-refresh weekly (Sundays 5am ET) from the upstream repo:

~/clawd-duke-leto/skills/sysadmin-toolbox/scripts/refresh.sh

Manual refresh anytime:

./scripts/refresh.sh [skill-dir]

Example Queries β†’ Actions

"Why is this port not responding?"
β†’ Load shell-oneliners.md, search for netstat/ss/lsof commands

"What's a good tool for testing SSL?"
β†’ Load cli-tools.md SSL section, recommend testssl.sh or sslyze

"Show me how to find large files"
β†’ Load shell-oneliners.md, search for find/ncdu/du commands

"I need to debug DNS resolution"
β†’ Load shell-oneliners.md dig section + recommend dnsdiag from cli-tools.md

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# Supported AI Coding Agents

This skill is compatible with the SKILL.md standard and works with all major AI coding agents:

⚑ Amp πŸš€ Antigravity πŸ€– Claude Code πŸ¦€ Clawdbot πŸ“ Codex ▢️ Cursor πŸ€– Droid πŸ’Ž Gemini CLI πŸ™ GitHub Copilot πŸͺΏ Goose πŸ“Š Kilo Code πŸ”§ Kiro CLI πŸ’» OpenCode 🦘 Roo Code 🌲 Trae πŸ„ Windsurf

Learn more about the SKILL.md standard and how to use these skills with your preferred AI coding agent.