this post was submitted on 02 Mar 2026
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I thought the same when I first booted Linux, but after reading it day by day, youโll understand more and if it is too fast you can always
Edit: woups!
Note that on current, systemd-based systems, one probably wants
sudo journalctl -kbto show kernel messages for the current boot.dmesgreads from the in-memory kernel ring buffer. That can be desirable in some cases, but as the name suggests, the "ring buffer" is a "ring"it has a finite amount of space and eventually, the old stuff gets overwritten by the new stuff. The idea is that a userspace logging daemon, like journald (or syslogd on most older systems) has time to pull the data from the ring buffer out to (potentially much larger) log files on disk.
journalctl will also post-process the output to do things like convert the time-from-boot to a wall clock time, which is generally more useful for correlating with other things.
dmesg
๐ฎ๐๐ปwoups