> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/ja/hacking-tools/calculators.md).

# 計算ツール

サブネット分割、Linux 権限、cron 式のための実用的な計算ツール集。検索可能な GitBook テーブルと迅速なトリアージメモを使用。

このセクションでは、一般的なペンテストと管理作業向けの高速参照用計算ツールをまとめています。各ページは検索可能なGitBookテーブルを使用しているため、必要な値を入力すれば、結果へ直接移動できます。

## 計算ツール一覧

<table data-view="cards" data-full-width="false" data-search="true"><thead><tr><th></th><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><h3><i class="fa-network-wired" style="color:$primary;">:network-wired:</i></h3></td><td><h4>サブネット計算機</h4></td><td>CIDR範囲、サブネットマスク、ワイルドカードマスク、ホスト数、ブロックサイズ、サブネット分割の例を検索できます。</td><td><a href="/ja/hacking-tools/calculators/subnetting-calculator.md">サブネット計算機</a></td></tr><tr><td><h3><i class="fa-key" style="color:$primary;">:key:</i></h3></td><td><h4>Linux権限計算機</h4></td><td>8進数の権限をシンボル表記に変換し、SUID/SGID/stickyビットを確認し、権限昇格への影響を把握できます。</td><td><a href="/ja/privesc/permissions/linux-permissions-calculator.md">Linux 権限計算機</a></td></tr><tr><td><h3><i class="fa-clock" style="color:$primary;">:clock:</i></h3></td><td><h4>Cron式計算機</h4></td><td>一般的なcron式を検索し、その人間向けの意味を読み取り、cronの権限昇格チェックを確認できます。</td><td><a href="/ja/privesc/cron-jobs/cron-expression-calculator.md">cron 式計算機</a></td></tr></tbody></table>

## クイック使い方

| 必要なもの          | 検索対象                                  |
| -------------- | ------------------------------------- |
| ネットワークマスクとホスト数 | `/24`, `/27`, `/30`                   |
| Linux権限の変換     | `755`, `644`, `4755`, `rwxr-xr-x`     |
| Cronスケジュールの意味  | `*/5 * * * *`, `0 0 * * *`, `@reboot` |


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# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://hacking-notes.jord4n.pro/ja/hacking-tools/calculators.md?ask=<question>&goal=<user_goal>
```

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`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case.

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Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.