開源 RISC OS Pi 系統 - 初探

1987 開始發展的RISC OS, 終於在2018年10月以Apache 2.0 License 開源，允許商業使用。

近來忙裡偷閒，用樹梅派最新版本 Raspberry Pi 3 Model B+ 安裝了RISC OS PI ，號稱是ARM 架構下快速也易於客制化的作業系統 (A fast and easily customized operating system for ARM devices)。

初步試用, 它的視窗環境用起來執行程式反應很快（相比Raspbian  based X-Window 來說)。

並試了一些常用工具都有替代的APP可以使用
Ex:

• Nettle(ssh/telnet client)
• LanMan (Samba client)
• NetSurf (Browser) ...

不過還需要更多開源高手投入時間進一步改善。

安裝方式是以ＮOOBS來安裝 RISC OS PI

https://projects.raspberrypi.org/en/projects/raspberry-pi-setting-up/3

小結

待機耗電量約在 2.93W (4.89V, 0.6A）運行較吃ＣＰＵ資源大約升高到 3.9W (4.89V, 0.8A)，以一個迷你作業系統而言，還算省電。有興趣的朋友可以裝起來試玩看看。

參考資料

• Link: RISC OS Star Commands

• STICKY: New to RISC OS? Read this

• Wikipedia RISC_OS

• Link: RISC OS is open for business!

延伸閱讀

• Cubieboard 耗電量實測
• F4OS與STM32F407的那些事兒？

DevOps Tip - Got error - not found aws-iam-authenticator for kubectl using?

Problem

I've got error to run kubectl command with aws-iam-authenticator not found

(venv) ➜  k8s git:(develop) ✗ kubectl get pod
Unable to connect to the server: getting credentials: exec: exec: "aws-iam-authenticator": executable file not found in $PATH

Solutions

Installation tool on OSX Mojave

brew install aws-iam-authenticator

Example of installation

 (venv) ➜  k8s git:(develop) ✗ brew install aws-iam-authenticator
Updating Homebrew...
==> Auto-updated Homebrew!
Updated 3 taps (homebrew/core, homebrew/cask and caskroom/cask).
==> New Formulae
..
==> Downloading https://homebrew.bintray.com/bottles/

aws-iam-authenticator-0.4.0.mojave.bottle.tar.gz
==> Downloading from https://akamai.bintray.com/52...
######################################################################## 100.0%
==> Pouring aws-iam-authenticator-0.4.0.mojave.bottle.tar.gz
🍺  /usr/local/Cellar/aws-iam-authenticator/0.4.0: 5 files, 31.1MB

References

• Amazon EKS Guide - Installing aws-iam-authenticator

Extended Reading

• DevOps Tip - How to use shared terraform plugins by -plugin-dir argument?
• DevOps Tip - How to use terraform apply without prompt and input yes for CI/CD?