Things I’ve learned so far this week (6 Dec)

It’s been a very long time since I’ve done one of these. So I thought I’d share. Not all of this was learned in the last week, but in the recent past.

  • When you do port forwarding with SSH, the default binding address for the forwarded port is 127.0.0.1. This is a security feature that prevents that port from being used by outsiders.
    • If you want to expose this, enable the configuration GatewayPorts in the SSHD configuration
  • Groovy has special DSL support for Cucumber. It makes writing cucumber steps easier and simpler to manage environment hooks
  • The obvious one, but rarely done in practice: Creating a POC in code is a lot better to get your core logic working than building out a full app and trying to make decisions later.
  • Bash: Substring extraction is possible in a very concise and easy manner. (Like most things in Bash, there are magical characters for that) It makes sub-arrays possible.
  • Bash function parameters are errrr different. Unlike most C-like languages, they define them by an array index than a variable name. (I.e. $1, $2, …)
    • You should define your local variables in your function near the top
    • All variables are global unless you declare them as local in bash

Other

  • Magic shows can be pretty cool (Thanks, Michael Carducci! [NFJS])
  • I need to see more firebreathing shows. (Rammstein included lots of fire displays)