The `tac` command in Linux, often overlooked as simply `cat` spelled backward, is a powerful tool for log analysis and incident response. By reversing the order of log entries, `tac` places the newest events at the top of the terminal, significantly speeding up the process of identifying root causes during active incidents. This tutorial covers its use in detecting brute-force attacks, reconstructing timelines, and analyzing various log types like `syslog` and `auth.log`. AI
RANK_REASON The item describes a utility command and its application, not a new release or significant industry event.
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