-
Mining With Solar Power
Here’s a Python script I wrote to check today’s sun rise/set times given a coordinate: https://github.com/raynix/solar-hours/blob/master/solar_hours.py It uses api.sunrise-sunset.org free API to get local sun rise/set time of today. It also takes time zone into consideration as the API only returns times in UTC time zone. It also cache the API result for a day so I’m…
-
Play a bit Kubernetes with Minikube
I’ve just played a bit Kubernetes on my Arch Linux laptop, with Minikube. It’s easier than I thought. Since I’ve already installed VirtualBox from the start, I can use minikube right after I installed it with curl -Lo minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 && chmod +x minikube && sudo mv minikube /usr/local/bin/ The command I used to start…
-
Mining ZCash on Ubuntu Linux
I didn’t quite believe that mining crypto currencies is viable as an individual, until I saw the news that AMD graphics cards were sold out because they’re good at mining Ethereum. To be convinced I tried to order AMD RX 570 from some online vendors, and they all cancelled my orders and refunded me shortly.…
-
Linux and Wake on LAN
The Internet servers are usually on 24×7, probably that’s why I never had the need to use the Wake on LAN feature on a computer. I’ve just built a home server running Ubuntu Linux, using consumer grade PC parts. To avoid a big surge on my next electricity bill, I plan to only turn on…
-
Install Fluentd with Ansible
Fluentd has become the popular open source log aggregration framework for a while. I’ll try to give it a spin with Ansible. There are quite some existing Ansible playbooks to install Fluentd out there, but I would like to do it from scratch just to understand how it works. From the installation guide page, I…
-
The Burnout Effect
Back in October 2015 I got an offer from a big data startup, and after 1 year and 4 months I decided to move on. There’s a 3D printer and a drone in the office and the team was talking about Fallout 4 in the morning because it was just released. I thought the company…
-
苹果电脑上的 Home 和 End 键
公司里面一般就给你准备两种笔记本电脑: Windows 10 + Lenovo/Dell/HP 或者 OS X + Macbook Pro. 我拿到的是后者, 而且是很不错的一款, 2015 MBP 顶级配置. 不过苹果电脑里有一些设置真是毫无道理, 例如 Home 和 End 键, 在 OS X 中被定义为[页首]和[页尾], Linux 上 Home 和 End 缺省是[行首]和[行尾]. 我不知道别人的实际应用是怎样的, 但对我而言[行首]和[行尾]要更常用到, 例如, 命令行 😀 下面是如何在 OS X 上重新定义 Home/End (在 Terminal 里完成): mkdir -p ~/Library/KeyBindings cat <<EOF > ~/Library/KeyBindings/DefaultKeyBinding.dict { /* Remap…
-
关闭 Dell XPS 15 9550 的独立显卡
最近我从 ebay 淘了个二手 Dell XPS 15 笔记本电脑, 2016年的而且配置很高, 但价格相当便宜. 既然好货不便宜, 这电脑是不是有问题? 是的, 卖家承认电脑的 nVidia 独立显卡有故障, 装好驱动程序之后 Windows 就会僵死, 但禁用了它之后一切正常, 当然就不要指望能玩什么像样的游戏了. 不过正好我也不打算在笔记本电脑上玩游戏的, 而且 Dell 对 Linux 的支持算是很好的, 于是我欣然买下. 电脑到手后我装了 Fedora 25, 一切顺利, 送走了 Windows 10. 顺便提及, Fedora 25 已经能检测到 XPS 15 BIOS 有更新可以安装了, 很赞. 启用 nVidia 驱动后果然死锁. 索性把 nVidia 关闭了吧, 还能延长电池的使用时间呢. 首先添加 bumblebee, 参考(在 Fedora 25…