前回（第14回）は systemd/systemctl で「サービスはどう起動・管理されているか」を“読む”練習をしました。今回はその結果（声）であるログを体系的にたどります。/var/log と dmesg、そして journalctl を安全第一で扱いましょう。 場所が分かれば速い：典型的な ...

Log files. They're there for a reason -- to keep track of what goes on behind the velvet curtain of your operating system. When things go wrong, entries are added to those log files, so you can view ...

Log rotation, a normal thing on Linux systems, keeps any particular log file from becoming too large, yet ensures that sufficient details on system activities are still available for proper system ...

How to monitor a Linux log file in real time Your email has been sent This must-know Linux command will make troubleshooting considerably easier. Quick: What’s the first thing you do when you need to ...