Today I ran into trouble installing therubyracer on Ruby 1.8. The installation failed with *** extconf.rb failed *** Could not create Makefile...
Ubuntu has a package mysql-sandbox that lets you install multiple MySQL versions into your user home: Install mysql-sandbox...
Establishing a new SSH connection usually takes only a few seconds, but if you’re connecting to a server multiple...
If your XFCE renders text with overly hard, thin lines instead of smooth anti-aliased lines, you might need to...
For all late night coders: The program "redshift" changes your monitors' white balance according to your position on the planet...
After running bundler / gem install I could not load nokogiri lately. It died with cannot load such file -- nokogiri/nokogiri.
I had some problems with Git and the file spec/fixtures/ČeskýÁČĎÉĚÍŇÓŘŠŤÚŮÝŽáčďéěíňóřšťúůýž. After pulling the latest commits, it would show that...
Capistrano 2 brings the shell command which allows you to run commands on your deployment targets. There is also invoke...
So you're hunting down a regression (or just a bug) and want to use git bisect to find out...
$RANDOM on bash returns a random integer between 0 and 32767. echo $RANDOM 9816 echo $RANDOM 30922
You can use xmllint to pretty-print ugly XML files on your terminal. Just say: xmllint --format file.xml
This card shows how to upgrade a Rails 2 application from Rails 2.3.8 through every single patch level up to...
Here is a good explanation for zombie processes. Quote: If you have zombie processes it means those zombies have not...
Put the attached files into your home directory and enjoy. .irbrc defines interesting_methods, which is essentially all methods without...
Sometimes sound breaks for me and speaker output is completely broken. This helped: pulseaudio -k && sudo alsa force-reload
Our development process makes us deploy very often. As the number of releases grows, junk clogs up the hard drive...
Good article that tells you how to change behavior of certain keys via xmodmap (with the help of exv if...
No chance you would have ever guessed it... sudo palimpsest
Option 1: Creating a self-signed certificate with the openssl binary As igalic commented on this gist. openssl req -new...
Authentication is hard: there are many edge cases, and most users (including yourself) usually only go the "happy path" once...
We have often felt the pain where our models need to serve too many masters. E.g. we are adding a...
Create a directory mkdir ~/.aws Initialise git repository cd ~/.aws && git init Create a git branch with a name you...
We ran into trouble when adding additional compute units to our railscomplete Hosting environment lately. VM-instances on the new...
tl;dr: Ruby's Bundler environment is passed on to system calls, which may not be what you may want...