Ubuntu Linux: View Boot Log

How do I view detailed boot log of my Ubuntu system?

The dmesg command print or control the kernel ring buffer. You can also use files located in /var/log/ directory to see snapshot of boot messages. To see logs type the following command at shell prompt (open the terminal and type the commands):
$ dmesg | less
You can use the following two files as well:

• /var/log/boot.log
• /var/log/dmesg

To see them type:

less /var/log/boot.log
less /var/log/dmesg
grep error /var/log/dmesg
grep something /var/log/boot.log

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