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Re: Troubleshooting Debian



Am Montag, 4. Juni 2012 schrieb DragonDon:
> Greetings all!

Hi!

> I know this will be a rather difficult thing to answer I think, but
> are there any generic steps listed somewhere on how to troublehshoot a
> problem on a Debian/Linux system?  I understand that each problem can
> be rather unique on how you approach it but I have yet to see a kind
> of flow-chart or at least some guidelines (did a quick search of the
> Debian FAQ and the LDP) and nothing was immediately obvious.  I was
> kinda looking for a:
> 
> 1/ Check logs.  Insert ways to check various logs (both CLI and GUI)
> 2/ Type commands (for networks use command A, for video use command B,
> for....)
> 
> Right now, and perhaps the only method, is to plunk in any error
> message (when I know there are any) into Google and hopefully a
> solution appears that works for Debian. Obviously a lot of Ubuntu
> results show up but given my limited knowledge on the difference, I am
> not yet qualified enough to know whether it will work without causing
> more complications.

I am not aware of anything available that is able to replace the own 
ability to *think*. You have a brain. Use it!

Aside from that there is the Debian Reference and lots of other excellent 
documentation and books about Debian.

Of course I could say, usually the important stuff is in

- /etc
- /usr/share/doc
- man and info pages
- command --help
- read error messages
- tail -f /var/log/something (+ optionally | grep something)
- dmesg
- grep, zgrep
- find
- file -sk somefile or device to see what it is
- blkid
- mount / cat /proc/mounts
- fdisk -l
- lsblk
- df -hT
- ip addr / route / link, ip route get
- /etc: apt/sources.list, apt/preferences, network/interfaces, 
resolv.conf…
- dpkg, apt-get, aptitude

But well now I have still omitted quite a lot of stuff.

So my recommendation is work yourself through Debian Reference and/or some 
good Debian book like

The Debian Administrators Handbook
http://debian-handbook.info

The Debian System
http://debiansystem.info/

or some other good book while gaining your own experience by practically 
using and administering Debian systems.

Ciao,
-- 
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA  B82F 991B EAAC A599 84C7


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