Raspberry pi 使用USB To TTL連接

malagege published on 2018-03-31 included in Linux

最近樹莓派網路越來越不穩定…
有時候對突然連不到…
重開主機就可以了
但這樣下去不是辦法
所以買一個USB To TTL這個東西跟Raspberry PI 連接

動畫特效繪制框架(Sketch.js)

malagege published on 2018-03-29 included in 網頁特效

Sketch.js

最近看到TVアニメ『LOST SONG』網站還滿酷的
所以研究了一下，發現是使用sketch.js

本來想說是很復雜的東西
結果看了一下，發現是用官網範例Plasmatic Isosurface
好像把dat.ui拿掉就跑出上面樣子

插點看WebGL那邊去了XD
不過發現圖象矩陣，感覺也是一門大坑學問

TVアニメ『LOST SONG』
sketch.js
2018鐵人賽索引和心得(圖多慎入) - iT 邦幫忙::一起幫忙解決難題，拯救 IT 人的一天
 Plasmatic Isosurface
WebGL 技术储备指南 | Taobao FED | 淘宝前端团队
 soulwire/Plasmatic-Isosurface: A 2 dimensional plasma simulation running on the GPU, written in GLSL and CoffeeScript and rendered with WebGL.

矩陣

連續打指令&& 與;差別

malagege published on 2018-03-26 included in Linux

Solved: cron question about multiple commands - Hewlett Packard Enterprise Community

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Re: cron question about multiple commands
"echo ; ls" will execute both echo and ls, whatever is echo exit code.

"echo && ls" will execute ls only if echo exit code is 0.

Maybe you should do a script. Complex lines in crontab make it not clear and harder to maintain.

Regards,

Fred
--

"Reality is just a point of view." (P. K. D.)

我有做個小實驗，簡單來講exit code;會傳回最後一個
但是&&會兩個看有沒有有沒有成功
Imgur

開機執行程式(/etc/rc.d/rc.local、Update-rc.d)筆記

malagege published on 2018-03-26 included in Linux

最近玩linux用到…
不過還沒實作過
因為要做logdown移轉動作
先筆記存檔一下

centos
在CentOS下配置自启动服务 | 王超的技术博客

Raspberry pi 遇到emergency mode問題

malagege published on 2018-03-26 included in Linux

很奇怪…今天Raspberry pi 開機遇到emergency mode

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Welcome to emergency mode! After logging in, type "journalctl -xb" to view
system logs, "systemctl reboot" to reboot, "systemctl default" to try again
to boot into default mode.
Give root password for maintenance
(or type Control-D to continue):