Martin Leitner‑Ankerl

Logical Volume Manager Cheatsheet

Posted on February 5, 2008

Today I got a new harddisk, so it was finally time for me to have an in depth look at LVM. I use it to combine two harddisks /dev/sdg1 and /dev/sdb1 into one volume group ext_vg which contains one big logical volume /dev/ext_vg/ext. In short, my 250GB and 500GB harddisks are used in one big 750GB ext3 mount point. [Read More]
Tags:
- howto
- linux
- tutorial
- ubuntu
Howto Get Enough Sleep Despite StumbleUpon with Ubuntu

Posted on January 24, 2008

What? [Read More]
Tags:
- cron
- getsomesleep
- howto
- lifehack
- linux
- ubuntu
Recovering from Hack

Posted on January 23, 2008

Hi fellow readers, two days ago I have noticed that my blog got hacked. Somebody has used php injection to add lots of links to dubious sites to my blog. This was invisible to the browsers but very much for search engines, and as a result I have been kicked out of the google index. Oh well. I have just upgraded to the newest version of wordpress, and the content is back too. While I am at it, I will also select and customize a brand new theme to make this site look uber-cool and hip again. That means that... [Read More]
Tags:
- hacked
- homepage
- upgrade
- wordpress
Get More Space Out of Your ext3 Partition

Posted on January 12, 2008

I have just discovered that ext3 defaults to reserving 5% of its partition exclusively for root, as a precaution measure that your system does not get FUBAR when you use it for your root partition. I have a 230GB external USB disk that I use for all my big storage requirements, downloaded stuff, backups etc. Due to this reservation I had 11.5GB of unusable disk space, thankfully this is easy to fix: [Read More]
Tags:
- ext3
- harddisk
- howto
- linux
- trick
- ubuntu
- wastedspace
Up, Up and Away!

Posted on November 27, 2007

This will be my last entry for some time. On 1st December I fly to South Africa and will have lots of fun traveling around, learning how to surf, and generally doing all kinds of stupid things for about 3 weeks. After that I will celebrate Christmas with my family and eat Christmas cookies until I cannot move anymore. To get fit again, I have already book my flight to Barcelona where there is a great Aikido class. After celebrating New Year there and eating tons of Tapas I finally get back on 3rd January. [Read More]
Tags:
- barcelona
- south africa
- spain
- travel
Major Clearlooks Compact Update

Posted on November 11, 2007

The Clearlooks Compact theme was released just a few days ago, and it already is the highest rated theme at gnome-look.org, out of more than a thousand. I guess the compactness really hit the nerve of lots of Linux users. [Read More]
Tags:
- clearlooks
- gtk
- linux
- theme
- ubuntu
Compact Theme Update

Posted on November 7, 2007

Compact theme just got more compact, now it switches to 16x16 icons which saves quite a bit of space for the buttons. More info here.
Tags:
- clearlooks
- gtk
- theme
- ubuntu
Clearlooks Compact Gnome Theme

Posted on November 4, 2007

I have been using Ubuntu for quite a while now, but one thing I really dislike is that all the themes are huge space wasters compared to Windows XP. This finally got me angry enough to create a customized version of the Clearlooks theme that tries to be very compact but still maintain its beautiful look. I like the result quite a lot, I have been using this theme for more than two weeks now and it works great. It is especially nice for intense applications like Eclipse. [Read More]
Tags:
- clearlooks
- comparison
- gtk
- linux
- release
- theme
- ubuntu
New Release of XDCC-Fetch

Posted on November 4, 2007

XDCC-Fetch is a nice little application written in Ruby that is able to download from XDCC bots on IRC. I have updated it to work with fox 1.6, so this should work with the recent Ruby version. [Read More]
Tags:
- freeware
- release
- ruby
- xdcc
- xdcc-fetch
New Release of Dice-RPG

Posted on November 4, 2007

I was bored today so I have updated my little program Dice-RPG to work with fox 1.6. [Read More]
Tags:
- Dice-RPG
- freeware
- release
- RPG
- ruby
Howto Change Ubuntu Forced fsck

Posted on November 3, 2007

In Ubuntu 7.10 the boot hard disk is checked every 20 boots. I have to boot my laptop quite often, so about once a week booting takes more than 10 minutes. This clearly sucks. Fortunately, there is an easy way to fix this. With tune2fs it is possible to change the interval from mount-times to timed interval: [Read More]
Tags:
- boot speed
- fsck
- harddisk
- howto
- tune2fs
- ubuntu
Optimized pow() approximation for Java, C / C++, and C#

Posted on October 4, 2007

I have already written about approximations of e^x, log(x) and pow(a, b) in my post Optimized Exponential Functions for Java. Now I have more In particular, the pow() function is now even faster, simpler, and more accurate. Without further ado, I proudly give you the brand new approximation: [Read More]
Tags:
- C++
- floating point
- java
- optimization
- programming
Climbing the Donnerkogel Klettersteig

Posted on September 23, 2007

I just came home from a fabulous Klettersteig (I don’t know an English name for this, maybe “fixed rope route”), namely the Donnerkogel. This was a fabulous day, excellent weather, and we had a lot of fun. Here are some impressions: [Read More]
Tags:
- climbing
- pictures
- travel
Comprehensive Linux Terminal Performance Comparison

Posted on September 1, 2007

Linux has an abundance of excellent terminal applications. Interestingly, I could not find any decent comparison of their text display performance. Since I use the command line a lot, I want text output that is as fast as possible. When you compile a large project, you don’t want the console output to be the limiting factor. [Read More]
Tags:
- benchmark
- comparison
- linux
- performance
- terminal
- ubuntu
Javadoc Search Engine Updated

Posted on August 22, 2007

The Javadoc Search Engine now searches JDK 7 too: [Read More]
Tags:
- google
- java
- jdk
- search engine
Ajax Dojo Comet Tutorial

Posted on August 21, 2007

EDIT: This tutorial is for an old version of dojo / comet, and it will not work in a recent version! [Read More]
Tags:
- ajax
- comet
- dojo
- howto
- programming
- tutorial
Java Developer Kit (JDK) Search Engine

Posted on July 20, 2007

Thanks to Google Co-op I have just created a new search engine that searches the JDK documentation. It is quite convenient because you can use the labels to choose which version you like to see: [Read More]
Tags:
- google
- java
- jdk
- search engine
Top 10 Posts of 2007

Posted on July 11, 2007

Over the last year I have gotten quite a lot of traffic, so I think it is time to create a top ten list of the most successful articles since then. [Read More]
Tags:
- blog
- martin.ankerl.com
- posts
- top 10
Project Development Phases

Posted on June 5, 2007

The 6 stages of every project are: [Read More]
Tags:
Erlang Syntax Highlighting

Posted on May 6, 2007

I have written a language definition file for GtkSourceView to get a nice syntax highlighting for Erlang with applications that use this component, e.g. Gnome’s standard editor gedit. [Read More]
Tags:

Logical Volume Manager Cheatsheet

Howto Get Enough Sleep Despite StumbleUpon with Ubuntu

Recovering from Hack

Get More Space Out of Your ext3 Partition

Up, Up and Away!

Major Clearlooks Compact Update

Compact Theme Update

Clearlooks Compact Gnome Theme

New Release of XDCC-Fetch

New Release of Dice-RPG

Howto Change Ubuntu Forced fsck

Optimized pow() approximation for Java, C / C++, and C#

Climbing the Donnerkogel Klettersteig

Comprehensive Linux Terminal Performance Comparison

Javadoc Search Engine Updated

Ajax Dojo Comet Tutorial

Java Developer Kit (JDK) Search Engine

Top 10 Posts of 2007

Project Development Phases

Erlang Syntax Highlighting