MuPDF is a PDF reader that renders very quickly, yet still correctly. It supports PDF 1.7 and all the fancy...
There are 3 built-in file descriptors: stdin, stdout and stderr (std=standard). (You can define your own, see the...
Spring is a Rails application preloader. When debugging e.g. the rails gem, you'll be wondering why your raise, puts...
better_errors is an awesome gem for enhanced error pages in development, featuring a live-REPL for some light debugging...
Sometimes you may want to print files from the command line, especially when you have lots of them.
rake -W [substring_of_task]
Splitting a long method into sub methods is easier in instances since it is in classes. Since...
On Ubuntu, you can scroll horizontally with your mouse wheel when holding the Shift key while scrolling.
Your development machine is usually on a very good network connection. To test how your application behaves on a slow...
To print a colored full-width bar on the bash, use this bash script expression: echo -e '\033[37;44m...
rake stats # => LOC per controllers, models, helpers; code ratios, and more rake notes # => collects TODO, FIXME and...
If you want to switch to another ruby versions, you have several options, depending on what you want: Do you...
If your terminal has many tabs, you'll want to keep them organized. To change their title from the prompt...
Rbenv won't compile REE 2011.03 properly on Ubuntu 12.04, failing with an error in tcmalloc.cc. If you want to...
In /etc/rc.local add: service bluetooth stop
Icons Sizes for Windows, MacOS X, iOS, Android and Linux. It's a mess!
TLDR: This card explains which threads and processes interact with each other when you run a Selenium test with Capybara...
If you have multiple monitors and want to share a given screen with your call partner, drag the caller window...
"CronMaker is a utility which helps you to build cron expressions." Check it out at http://www.cronmaker.com/.
Modern IRB has time measurement built in. measure # Enable measure :off # Disable Custom Should your version of IRB not offer...
When you print something from within your .bashrc file you will run into trouble when copying something onto your machine...
Say you have a User with a Carrierwave attribute #avatar: class User < ActiveRecord::Base mount_uploader :avatar, AvatarUploader end
Note - This is not a tutorial on setup or configuration of Secure Shell, but is an overview of technology which...
Sometimes you need to monitor a connection from your machine to a specific, single host or network in order to...