kern.log part 1

$cut -d ' ' -f6-20 /var/log/kern.log
[22293.016178] kjournald starting. Commit interval 5 seconds
[22293.016218] EXT3-fs warning: maximal mount count reached, running e2fsck is recommended
[22293.016635] EXT3 FS on sdb2, internal journal
[22293.016647] EXT3-fs: mounted filesystem with ordered data mode.

The First field shown above is a timestamp.
The kernel ring buffer is not really a log file per se,
but rather an area in the running kernel you can
query for kernel bootup messages via the dmesg utility

Reference/Source :

Related Reading :