If you want to do an ongoing speedtest with graphs for up- and download, forget about the web-based tools like speedtest.net and fast.com - those are nice if you are on a mobile phone. These speedtests as a service will not show you continuous graphs (which sometime you might want to have if you are tweaking your network).

On such occasions, your *nix shell yields better tooling!

First, fire up a Terminal and start nload to view network traffic. If you are on macOS, you can also use the graphical tool activity monitor.


Then, in a second Terminal, start a...

  • Tooling
  • debian
  • bash
  • linux
  • nload
  • shell
  • unix

Amazon AWS has a nice command line client for their public cloud. This client is very well suited for automating tasks in many IaaS DevOps scenarios. However, it can also be used by a person. The scenarios to do so might be different than for automation, though.

A common scenario for looking into S3 is to want to list files ordered by date and including metadata. On a Unix machine, this would be an ls -lt. If it's a very long list of files, you might want to cap the list - which again is very easy to achieve, for...

TL;DR Use codegraph to visualize dependencies within a Clojure file. Codegraph applied to itself will for example generate this graph:

example codegraph graph

Here is how it works.

The other day I wished I had a visualization of the dependencies in a piece of ClojureScript code that over the course of the year has gotten a bit unwieldy. I did some thinking and some codeing and it turns out it's quite easy. Here are some of the highlights in code & images, but mostly code.

Reading a string and have it evaluates in Clojure is done with read-string. Reading a...

  • tooling
  • clojure
  • graph
  • dependencies
  • visualization

Frustration with slow and manual processes is probably my number one motivator to discover new tooling. Having lately worked with Swagger on a Json API I found myself in need of a tool to work with Json on the command line.

I tried a couple and just when I was about to make the decision that I want to try them all to find the best one my search was cut short when I tried jq. On the web site it claims: jq is like sed for JSON data. And come to think of it what would we do without...