https://blog.marcjestin.fr/en/tags/permissions/Recent content in Permissions on Marc JESTIN's BlogHugo -- gohugo.ioen© 2026Sat, 09 May 2026 00:00:00 +0000https://blog.marcjestin.fr/en/posts/using-acls-for-advanced-file-and-directory-permissions-in-debian/Sat, 09 May 2026 00:00:00 +0000https://blog.marcjestin.fr/en/posts/using-acls-for-advanced-file-and-directory-permissions-in-debian/<p>Hello,</p> <p>We often find ourselves working in directories where multiple users &ldquo;clash&rdquo; with one another.</p> <p>A common example is when we need to clear caches generated by web server components. We then run into ownership and permission issues.</p> <p>Usually, we rely on &ldquo;bad good solutions&rdquo;, such as:</p> <ul> <li>Adding our user to a group it doesn&rsquo;t truly belong to.</li> <li>Creating custom <code>sudo</code> rules (which often end up being too broad, creating a significant security loophole).</li> </ul> <p>Managing <code>ACLs</code> in Debian allows us to handle this very simply.</p>