When you want to copy/move from a shared folder (on Windows guests, for example) and it fails with absurd error...
When you are trying to install/update VirtualBox Guest Additions on your guest machine but the setup is for a different/older...
If you don't want to mess around with arcane incantations inside xorg.conf, you can use the graphical arandr tool...
Setup the mirror by following the steps described here. If you want to enable OS upgrades using do-release-upgrade...
While you can set your own font in your terminal or other tools, it will not change the default "Monospace...
This is for you if you get the following strange error from the state_machine gem: undefined method `-' for #
If you get this warning on your local machine one of these steps might help: Rebuilt the gem with the...
Trick: Do not use convert but mogrify: mogrify -resize 50% * This overwrites the original image file. In contrast, convert writes...
When you get an error like this: Invalid gemspec in [/opt/www/foo-project.makandra.de/shared/bundle/ruby/1.8/specifications/carrierwave-0.6.2.gemspec]: Illformed requirement ["# 1.1.4"] ... the machine's Rubygems needs to...
Keychain helps you to manage ssh and GPG keys in a convenient and secure manner. It acts as a frontend...
Every now and then, Java is subject to security issues where code can break out of Java's sandbox and...
This will make MySQL log all received queries so you can see for yourself what happens on the database level...
I've got often this error on just one server: Err http://de.archive.ubuntu.com precise/universe amd64 Packages 404 Not Found [IP...
xip.io is a magic domain name that provides wildcard DNS for any IP address. Say your LAN IP address is...
I had trouble serving an MP4 video to my iPad. Although the video complied with all the specs (H.264 codec...
Note: You might also want to check out BoxCryptor which does pretty much the same, and is supported across many...
This is for you when you want to mount a dmcrypt encrypted partition manually, e.g. from a live CD.
When you are using NAT in your virtual machine (which you should), the host's IP address is: 10.0.2.2
If you want to know your public key's fingerprint, do this: ssh-keygen -lf ~/.ssh/my.key.pub This may be necessary...
We experienced problems with Sunspot and Solr on Tomcat: Umlauts (ä, ö, ü) were not correctly handled on Tomcat while...
Imagine you have 2 HTML boxes. The first one has a margin-bottom of let's say 30px and the...
Sometimes you need to restart the Gnome panel, e.g. when you installed a new Gnome panel widget but the widget...
This describes all the steps you'll need to get Solr up and running for your project using the Sunspot...
Removing features and merging those changes back can be painful. Here is how it worked for me.\