HE Fang - Some where to write something

About

Sun, 16 Jun 2019 10:39:58 +0800

About me Nothing. More information Nothing. Contact me Don’t do it.

New laptop - Yoga 14s AMD version

Sun, 02 Aug 2020 19:05:34 +0800

As my old laptop ages, the condition of it keeps degrading (broken chassis/hinge, wear-out battery, nonfunctional numpad, etc.). Recently I switched to a new laptop - yoga 14s AMD version.

Don't write ugly code

Thu, 04 Jun 2020 19:05:34 +0800

If your program code is ugly (too complex / too long / too much hacks), you are very likely doing it wrong.

First impression with libuv

Wed, 01 Jan 2020 00:00:00 +0000

Happy New Year! May it be year of the Linux desktop.

Recently I tried to port my small DNS relay and dispatcher to libuv - the core of node.js.

Save as root in non-root vim

Tue, 17 Sep 2019 00:00:00 +0000

Sometimes, you edited some system files and want to save them, but then realized you forgot to open them in vim with root privileges. What can you do now?

The Weird CityU WIFI Network

Tue, 03 Sep 2019 00:00:00 +0000

Recently when I checked the system journals, I found a lot of spams generated by my WIFI connection like these

~ vs $HOME

Mon, 12 Aug 2019 00:00:00 +0000

~ is expanded to current user home directory by shell, just like the variable $HOME.

While $HOME is expanded in most places (except inside single quotes), ~ is expanded only in a few specific conditions.

The Bash Trap Command

Thu, 08 Aug 2019 00:00:00 +0000

Just want to recommend a very good writeup for bash trap command.

Debloating texlive-fontsextra

Sun, 21 Jul 2019 00:00:00 +0000

The texlive-fontsextra package is so bloated. It leaves a 1.1 GB package on your file system and pollutes your font cache with thousands of useless fonts.

Be careful when using pipes in shell script

Sun, 14 Jul 2019 00:00:00 +0000

"|" pipe operator redirects I/O to a subshell.

Variables in a subshell are not visible outside the block of code in the subshell.

Debug python c/c++ extensions

Thu, 27 Jun 2019 00:00:00 +0000

It’s common to use c/c++ extension in python program for better performance. But it’s hard to debug c/c++ code when it’s called from python.

git diff 101

Thu, 20 Jun 2019 00:00:00 +0000

To use git diff more efficiently, we actually have to understand different stages of git files.

dotfiles

Sun, 16 Jun 2019 10:23:37 +0800

When you live in a command line, configurations are a deeply personal thing. They are often crafted over years of experience, battles lost, lessons learned, advice followed, and ingenuity rewarded. When you are away from your own configurations, you are an orphaned refugee in unfamiliar and hostile surroundings. You feel clumsy and out of sorts. You are filled with a sense of longing to be back in a place you know. A place you built. A place where all the short-cuts have been worn bare by your own travels. A place you proudly call… $HOME.

Hello World

Sat, 15 Jun 2019 00:00:00 +0000

Hello Github Pages & Jekyll!

Mon, 01 Jan 0001 00:00:00 +0000

Heart body { margin: 0px; } canvas { width: 100%; height: 100%; display: block; } p { position: absolute; right: 0; bottom: 0; color: rgb(0, 149, 248); z-index: 1000; } Love is mutual. void main() { gl_Position = vec4( position, 1.0 ); } #ifdef GL_ES precision mediump float; #endif uniform vec2 u_resolution; uniform float u_time; #define POINT_COUNT 15 vec2 points[POINT_COUNT]; const float speed = -0.