Varlogkernlog
Varlogkernlog is a shorthand used in Linux administration to refer to the kernel log, the collection of messages emitted by the kernel during operation. It is not a fixed file name; the actual location depends on the distribution and logging system. Kernel messages are generated by printk and include boot diagnostics, driver messages, hardware events, and error reports. These messages help diagnose hardware problems, kernel panics, or driver failures.
Common locations include /var/log/kern.log on Debian-based systems with rsyslog, /var/log/messages on Red Hat-based systems, and entries
Kernel messages can also be viewed directly from the kernel ring buffer via dmesg; to see human-friendly
See also: dmesg, printk, syslog, journald, kernel logging facilities. The term varlogkernlog is used in documentation