sysadmin-toolbox

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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

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Sourcejdrhyne/agent-skills

Added on2026-02-13

NPX Install

npx skill4agent add jdrhyne/agent-skills sysadmin-toolbox

SKILL.md Content

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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:

bash

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

Manual refresh anytime: