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A series of how to examples on using jq, a command-line JSON processor August 5, 2016 Updated September 19, 2024 jq - JSON formatting tool jq is a fantastic command-line JSON processor. It plays nice with UNIX pipes and offers extensive functionality for interrogating, manipulating and working with JSON file. How to pretty print JSON ¶ jq can do a lot but probably the highest frequency use for mos
Tutorial on using exit codes from Linux or UNIX commands. Examples of how to get the exit code of a command, how to set the exit code and how to suppress exit codes. Exit codes in Unix and Linux August 7, 2016 Updated September 19, 2024 What is an exit code in the UNIX or Linux shell? ¶ An exit code, or sometimes known as a return code, is the code returned to a parent process by an executable. On
Statuslines in Vim are not hard to create. Making your own means one less dependency in your life. May 12, 2017 Updated September 19, 2024 The default vim statusline What is a statusline in Vim? ¶ The statusline in Vim is the bar along the bottom of the Vim window. By default it does not show when you open Vim until there is more than one window. The statusline is intended to give you information
Vim: So long Pathogen, hello native package loading Vim 8 added a native way to load third-party packages. This means, for me at least, there is no longer any need to use a third party plugin helper like Pathogen. October 20, 2016 Updated October 2, 2023 Vim 8 brings native third-party package loading ¶ Vim 8, released on 12th September, added a new feature of being able to load third party packag
Vim's netrw file browser is good enough. With a few tweaks there is no need for plugin like NERDtree. For many tasks you may not even need netrw. October 18, 2016 Updated October 2, 2023 Screenshot of netrw directory browser netrw - the unloved directory browser ¶ The netrw plugin normally ships with vim and is the default filebrowser. It gets a bad rap and ships with all kinds of features likes r
A major strength of Node.js is great cross-platform support. With a little effort you can make sure your code will run on Windows, Linux and OSX. March 25, 2014 Updated September 19, 2024 Cross-platform if you want ¶ Node.js is cross-platform meaning it works on Windows, OSX and Linux. A large number of the Node.js community write Node.js on OSX and then deploy to Linux servers. Because OSX and Li
The HTML5 Vibrate API allows you to trigger vibration on a device. January 3, 2014 Updated September 19, 2024 Make me vibrate ¶ Mobile and tablet devices have become hugely prevalent in how users access the web. So much so that Walmart reported that on Black Friday over 50% of traffic was via mobile traffic. This is good news for developers as these devices come with a range of capabilities that a
Node.js is a great platform for creating small command line utilities, especially where I/O occurs. January 2, 2014 Updated September 19, 2024 Write command line utilities with Node.js ¶ An underused feature of Node.js is the ability to write command-line scripts. This gives you the full power of Node.js as a network programming platform and the brilliance of npm to allow you to share your scripts
You can't trust undefined in JavaScript even after ES5 made it immutable March 28, 2013 Updated September 19, 2024 Undefined ¶ Undefined is a JavaScript primitive that is used when a value has not been assigned a value. If you have done more than one day’s programming in any language you will realise that this is an important building block for programmers. You can check if a value is undefined in
How to run Nginx and Node.js in parallel on Ubuntu May 31, 2012 Updated September 19, 2024 Nginx and Node.js ¶ Nginx is a great web server. It is lightweight and easy to configure. It can be used to proxy through to Node.js processes but the current stable branch does not support proxying WebSockets. Supporting WebSockets is on the slate for 1.3.x releases (along with much anticipated SPDY support
How I use rbenv to manage rubies and integrate with other tools October 12, 2011 Updated September 19, 2024 rbenv is great ¶ If you haven’t seen rbenv yet I highly recommend it. It is a small collection of shell scripts that lets you manage rubies on UNIX type machines. To date I’ve used rvm to install versions of ruby and manage gemsets. Don’t get me wrong - I’m hugely greatful to the work that h
A walkthrough on how to manage Unicorn worker processes using Monit September 12, 2011 Updated September 19, 2024 Riding Unicorns ¶ For many reasons I like using Unicorn as a web server for Ruby apps. Ryan Tomayko wrote a great article and the many Unix features that it has. It has the killer feature of supporting hot restarts so you can deploy new releases with zero downtime. This means that in m
A walkthrough on how to create and deploy a basic site with Node.js and the Express framework. Examples of generating an express site, how to use templating and styles, creating basic routes and deploying the app to the Internet. April 18, 2011 Updated September 19, 2024 What we are going to do ¶ This walkthrough will go over setting up a basic site using Node.js and Express. The walkthrough is ai
Node.js is gaining a lot of speed and is an exciting new development framework. Here's a quick overview of how to get Node.js working on OSX along with npm, the package manager for node. August 30, 2010 Updated September 19, 2024 Update: There are now packages available for OSX and Windows if you prefer a one click install for Node.js and NPM. To install from source you probably know what you are
You need either Firefox 3.5, Safari 3, 4, Opera, Webkit Nightly to view this page. Firefox 3.5 - ogg codec The loop and poster attributes are not implemented yet in Firefox. With controls Autobuffer & Controls Autoplay Width and height I thought video might be resized here but it isn't. Safari - h.264 codec With controls Autobuffer & Controls Poster Fails Safari 3.2.3 and Webkit Nightly on OSX 10.
I've recently moved from using Parallels for browser testing to Sun's Open Source VirtualBox. Here's a walkthrough on how to get a browser testing suite for free on OSX or Ubuntu. April 14, 2009 Updated September 19, 2024 Microsoft’s Virtual Hard Drives ¶ Microsoft make a series of downloads available for web developers to ensure browser compatibility. Currently you can download IE6-8 on XP and IE
A short tutorial on creating a vector-based comment icon in Illustrator. The tutorial includes a downloadable illustrator file to work through the example with. June 29, 2007 Updated September 19, 2024 What we want to achieve ¶ We are going to create a simple comment icon that can be use on a website or CMS. We’ll use some simple illustrator techniques to achieve the effect. Comment icon stage 5 C
Recent Posts Toggle light and dark mode in Vim, Tmux and Alacritty May 24, 2023 A tale of wanting nice things on Linux for Vim, Tmux and Alacritty and how it ended in a filthy shell script. Renewal Oct 8, 2021 Using HashiCorp Vault with LDAP Sep 13, 2017 How to use setup HashiCorp Vault using LDAP for authentication. Includes read-only access for users in groups and read-write access for specific
Coding CSS can quickly run into difficulties with different browsers interpreting code in different ways. Designs will never look the same in every browser but you can help yourself by using a default style set when you start coding. March 6, 2007 Updated September 19, 2024 Comment your code ¶ To start with it is important that you document your code. I like Andy Budd’s approach of writing the ver
A tutorial showing how overlapping tabbed navigation is possible in CSS and can be cross-browser compatible, accessible and javascript free. December 9, 2006 Updated September 19, 2024 Not interested in the explanation? You can find the demo and download the source code here. Overlapping Navigation Example Overlaps - a problem ¶ Overlapping navigation is a real problem in CSS with the box model an
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