> 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/fr/hacking-tools/calculators.md).

# Calculateurs

Cette section regroupe des calculateurs de recherche rapide pour les tâches courantes de pentesting et d’administration. Chaque page utilise des tableaux GitBook consultables, afin que vous puissiez saisir la valeur dont vous avez besoin et accéder directement au résultat.

## Index des calculateurs

<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:$primary;">:network-wired:</i></h3></td><td><h4>Calculateur de sous-réseaux</h4></td><td>Recherchez des plages CIDR, des masques de sous-réseau, des masques génériques, le nombre d’hôtes, la taille des blocs et des exemples de sous-réseautage.</td><td><a href="/pages/5cb0d56d2542415e7e0688ba0be31abd10831a0b">/pages/5cb0d56d2542415e7e0688ba0be31abd10831a0b</a></td></tr><tr><td><h3><i class="fa-key" style="color:$primary;">:key:</i></h3></td><td><h4>Calculateur des permissions Linux</h4></td><td>Convertissez les permissions octales en notation symbolique, examinez les bits SUID/SGID/sticky et identifiez l’impact sur l’élévation de privilèges.</td><td><a href="/pages/153f601af26d81bf75ca76b68373e5f19e1487b0">/pages/153f601af26d81bf75ca76b68373e5f19e1487b0</a></td></tr><tr><td><h3><i class="fa-clock" style="color:$primary;">:clock:</i></h3></td><td><h4>Calculateur d’expression Cron</h4></td><td>Recherchez des expressions cron courantes, lisez leur signification en langage humain et examinez les vérifications d’élévation de privilèges liées à cron.</td><td><a href="/pages/0bad9f9c454c5f70c69a754a6844c60538a021a9">/pages/0bad9f9c454c5f70c69a754a6844c60538a021a9</a></td></tr></tbody></table>

## Utilisation rapide

| Besoin                                 | Rechercher                            |
| -------------------------------------- | ------------------------------------- |
| Masque réseau et nombre d’hôtes        | `/24`, `/27`, `/30`                   |
| Conversion des permissions Linux       | `755`, `644`, `4755`, `rwxr-xr-x`     |
| Signification de la planification Cron | `*/5 * * * *`, `0 0 * * *`, `@reboot` |


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