Update cheatsheets

tldr/linux/sealert

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# sealert
+
+> Analyze and explain SELinux AVC denial messages.
+> Part of the `setroubleshoot-server` package.
+> See also: `audit2why`, `ausearch`, `audit2allow`.
+> More information: <https://manned.org/sealert>.
+
+- Analyze all recent SELinux denials:
+
+`sudo sealert {{[-a|--analyze]}} {{/var/log/audit/audit.log}}`
+
+- Analyze a specific alert ID from system logs:
+
+`sudo sealert {{[-l|--lookupid]}} {{alert_id}}`
+
+- Display a summary of recent SELinux alerts:
+
+`sudo sealert {{[-b|--browser]}}`
+
+- Monitor audit log in real-time for new alerts:
+
+`sudo tail {{[-f|--follow]}} {{/var/log/audit/audit.log}} | sealert {{[-l|--lookupid]}} -`