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 -nis bash-only; use/bin/bash -lcor a Python ThreadPool fallback for parallel downloads.
Keeping Current
References auto-refresh weekly (Sundays 5am ET) from the upstream repo:
bash
~/clawd-duke-leto/skills/sysadmin-toolbox/scripts/refresh.sh
Manual refresh anytime:
bash
./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