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

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 → Actions

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

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

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

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