bash-skill

bash-skill is a skill for Claude Code from zeenie-ai/OpenCompany. It costs 22 tokens per session (865 once invoked), scanned B, original, MIT.

A set of Linux and macOS Bash commands and patterns for managing processes, files, packages, development servers, and system settings.

In plain words
What is it for?
Use it to install packages, start development servers, inspect ports, find files, search file contents, and perform system administration.
Why use it?
It helps an agent run common computer tasks correctly on Unix-based systems, where commands differ from Windows.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Good fit Use it to install packages, start development servers, inspect ports, find files, search file contents, and perform system administration.

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Install with agentmods
npx agentmods add skills/zeenie-ai/opencompany/bash-skill
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add zeenie-ai/OpenCompany --skill bash-skill
Clone the repo
git clone --depth 1 https://github.com/zeenie-ai/OpenCompany

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for bash-skill

README.md
[![agentmods](https://agentmods.dev/badge/skills/zeenie-ai/opencompany/bash-skill/github.svg)](https://agentmods.dev/skills/zeenie-ai/opencompany/bash-skill)
Your own site
<a href="https://agentmods.dev/skills/zeenie-ai/opencompany/bash-skill"><img src="https://agentmods.dev/badge/skills/zeenie-ai/opencompany/bash-skill/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for bash-skill

Your own site · 80×15
<a href="https://agentmods.dev/skills/zeenie-ai/opencompany/bash-skill"><img src="https://agentmods.dev/badge/skills/zeenie-ai/opencompany/bash-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 22 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 865 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Privilege Escalation · line 40
    Commands invoke sudo or root privileges. Verify this elevated access is necessary and justified.
    Fix: Avoid sudo/root unless strictly required. Prefer least-privilege patterns. If elevation is needed, document the justification and scope.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00022 $0.00865
Opus 5 $0.00011 $0.00432
Sonnet 5 $0.00004 $0.00173
Haiku 4.5 $0.00002 $0.00086

Measured 9d ago against content hash 296c7b4b5f98, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade B, and why

bash-skill scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

{"operation": "start", "name": "apt-install", "command": "sudo apt-get install -y curl jq"}

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

{"operation": "start", "name": "apt-install", "command": "sudo apt-get install -y curl jq"}
server/skills/terminal/bash-skill/SKILL.md · 119 lines

How it starts

The opening of the file, as written. The whole thing — 119 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Bash Skill (Linux / macOS)

Use this skill when the host system is Linux or macOS. Commands run via the process_manager tool (which has full PATH access).

Detect Linux/macOS

Before using Bash commands, verify the OS:

{"operation": "start", "name": "os-check", "command": "uname -s"}

Linux = Linux, Darwin = macOS. If neither, use the powershell skill.

Common Patterns

Install packages

npm:

{"operation": "start", "name": "npm-install", "command": "npm install express"}

pip:

{"operation": "start", "name": "pip-install", "command": "pip3 install flask"}

apt (Debian/Ubuntu):

{"operation": "start", "name": "apt-install", "command": "sudo apt-get install -y curl jq"}

brew (macOS):

{"operation": "start", "name": "brew-install", "command": "brew install jq"}

Start a dev server

{"operation": "start", "name": "dev-server", "command": "npm run dev"}

Check what's running on a port

{"operation": "start", "name": "port-check", "command": "lsof -ti :3000"}

Find files

{"operation": "start", "name": "find-py", "command": "find . -name '*.py' -type f"}

Search file contents

{"operation": "start", "name": "grep-todo", "command": "grep -rn 'TODO' --include='*.py' ."}

Disk usage

{"operation": "start", "name": "disk", "command": "df -h && echo '---' && du -sh ./*"}

Environment

{"operation": "start", "name": "env", "command": "echo $PATH | tr ':' '\\n'"}

Kill process by port

{"operation": "start", "name": "kill-port", "command": "kill -9 $(lsof -ti :8080)"}

Download a file

{"operation": "start", "name": "download", "command": "curl -fsSL -o file.zip https://example.com/file.zip"}

Watch a log file

{"operation": "start", "name": "tail-log", "command": "tail -f /var/log/app.log"}

macOS-Specific

Task Command
Open in Finder open .
System info sw_vers
Package manager brew install/uninstall
Services launchctl list

Read the full file on GitHub · 119 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 119 lines · 22 tokens per session scan B 296c7b4b5f98

Subscribe to this mod's changes

bash-skill is a skill published in the GitHub repository zeenie-ai/OpenCompany (875 stars, last pushed yesterday), licensed MIT. It adds 22 tokens to every session and 865 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it B with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.