One of the more controversial changes in the Ubuntu 10.04 beta is the Mac OS-inspired change to have window...
When you simply want to get to know Puppet, follow puppetlabs’ Learning Puppet Docs. They give you a handy introduction...
Reading a URL via GET: curl http://example.com/ Defining any HTTP method (like POST or PUT): curl http://example.com/users/1...
When installing RMagick you may get an error messages like this: Version 2.13.1: checking for Ruby version >= 1.8.5... yes
If you want to manually check if e-mail delivery works on a machine by sending an e-mail you...
blueprint is DevStructure’s workhorse tool that looks inside popular package managers, finds changes you made to configuration files, and...
My T410 has a NVIDIA graphics card (NVS 3100M). My BIOS configuration looks like this: NVIDIA Optimus is disabled in...
Although you can access many symbols using the AltGr key you may be missing some, like the en-dash (–) or...
This note is a reminder that there is something called AppArmor that could cause weird errors ("File not found", "Can...
Using OpenSSL it's very easy to seriously encrypt files. Use the script below. Input / Output are self explanatory. Put...
When you delete a file with rm it's still possible to recover the file or parts of it. Use...
Sometimes you want to run a command forever, e.g. to compile a haml to html file on the console. Use...
When you need to bulk rename files you can not call "mv *.foo *.bar" to change the extension of all...
To list the name and version of your Linux distribution, type the following: cat /etc/*-release
The idea is this: you take a job that you'd rather not do manually, and describe it to babushka...
It's that simple to allow one of your Linux users to run a single command as UID 0:
Call geordi clean from a project root to remove unused and unnecessary files inside it. This script is part of...
Because Nokogiri needs to be compiled and dynamically linked against both libxml2 and libxslt, it has gained a reputation for...
This is a bash script for those of you who need to install all gems for all projects (e.g. to...
Ctrl + R Search commands you entered previously. Press Ctrl + R again to search further back, Ctrl + Shift + R searches forward...
I prefer the application that I'm currently working on to be reachable at http://localhost/. So when I switch...
This post will describe how I stumbled upon a code path in the Linux kernel which allows external programs to...
If a SSH shell dies (from timeout for example), you cannot kill it with the usual CTRL-C or CTRL...
Note that you should disable the Java plug-in in your browsers after installation. Ubuntu >= 12.04 Java 11