some questions about log level

[Mulyadi Santosa]

On Mon, Dec 12, 2011 at 21:18, loody <miloody at gmail.com> wrote:
> hi all:
> my questions are below:
> 1. Can I temporarily let kernel message show in stdout?
>    I google some key word as "console_loglevel" and I found following methods:
>     a. echo 8 > /proc/sys/kernel/printk
>     b. write a simple program which calling "klogctl(8, NULL, level)"
> Then I purposely connect/disconnect USB, but my console keep quiet.
> But dmesg shows connect/disconnect messages.

Perhaps this document could explain the basics better than me:
http://lxr.linux.no/#linux+v3.1.5/Documentation/sysctl/kernel.txt#L405

Hope that helps...


-- 
regards,

Mulyadi Santosa
Freelance Linux trainer and consultant

blog: the-hydra.blogspot.com
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