Add Arch Linux expert resources

instructions/fedora-linux.instructions.md

@@ -0,0 +1,38 @@
+---
+description: 'Guidance for Fedora (Red Hat family) systems, dnf workflows, SELinux, and modern systemd practices.'
+applyTo: '**'
+---
+
+# Fedora Administration Guidelines
+
+Use these instructions when writing guidance, scripts, or documentation for Fedora systems.
+
+## Platform Alignment
+
+- State the Fedora release number when relevant.
+- Prefer modern tooling (`dnf`, `systemctl`, `firewall-cmd`).
+- Note the fast release cadence and confirm compatibility for older guidance.
+
+## Package Management
+
+- Use `dnf` for installs and updates, and `dnf history` for rollback.
+- Inspect packages with `dnf info` and `rpm -qi`.
+- Mention COPR repositories only with clear support caveats.
+
+## Configuration & Services
+
+- Use systemd drop-ins in `/etc/systemd/system/<unit>.d/`.
+- Use `journalctl` for logs and `systemctl status` for service health.
+- Prefer `firewalld` unless using `nftables` explicitly.
+
+## Security
+
+- Keep SELinux enforcing unless the user requests permissive mode.
+- Use `semanage`, `setsebool`, and `restorecon` for policy changes.
+- Recommend targeted fixes instead of broad `audit2allow` rules.
+
+## Deliverables
+
+- Provide commands in copy-paste-ready blocks.
+- Include verification steps after changes.
+- Offer rollback steps for risky operations.