Category Archives: Linux

Wow, GCC is pretty patronizing …

Posted on 2008-12-15 by Oliver

Trying to compile the following code in GCC yields an error: #define __dbgprintf /##/ The error reads error: pasting “/” and “/” does not give a valid preprocessing token. As far as C99 is concerned, this should be perfectly valid … Continue reading →

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“etch-and-a-half”, Debian Etch R4 released

Posted on 2008-07-29 by Oliver

If you can, use apt-get update && apt-get dist-upgrade in some kind of sandbox (“lab-conditions”). For me everything went smooth. // Oliver

Posted in EN, IT Security, Linux, Software | 1 Comment

Getting rid of SSH brute forcers

Posted on 2008-06-29 by Oliver

I am usually using different methods in a combination. In the sshd_config I declare AllowGroups with the group ssh-users. This group does never contain root. Furthermore I set PasswordAuthentication no and generally authenticate only by key. Root login is of … Continue reading →

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Version-controlled edit via Bash script (Debian)

Posted on 2008-06-03 by Oliver

As I am currently setting up a new server, I thought it would be a good idea to keep most of the configuration files (e.g. /etc) under version control. RCS comes in handy to achieve just that, but laziness requires … Continue reading →

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Bash’s your friend

Posted on 2007-11-11 by Oliver

Oh, and a hint for everyone who is still greping through the bash history to find the command he used … well, way back. Try Ctrl+R 😉 Yeah, hit Ctrl+R when on the console and enter the first few characters … Continue reading →

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Bash bash bash

Posted on 2007-11-11 by Oliver

Yes, indeed bash has become my favorite shell. Not only is it so versatile, but some of those advanced features make it best-suited for almost any task you’ll ever face on a console. And if it is not enough for … Continue reading →

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Let’s pimp ‘newvserver’

Posted on 2007-10-21 by Oliver

newvserver is a truly convenient script to create a new vserver and have it largely preconfigured. Too sad it lacks the necessary flexibility … you think? Think twice. Bash gives newvserver the flexibility that you need! Alright, so you figured … Continue reading →

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