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  Remote execute command in Java example

Frequently there is a need to logon to a remote system and run some commands or programs to get the output, many software can serve this purpose such as putty and gitshell.These software usually provide secure access to the remote system. But have you ever wondered what to do if you need to run commands on many different systems at the same time and get all these results back at a single place? Especially in big data era, many tasks may run on different distributed systems and you want o have a ...

   JSch, Example, Distributed system, SSH2     2014-12-12 03:20:19

  Inspiring facts about JavaScript

JavaScript has been advocated as the first language to be learned by people who want to program. We have discussed the reasons why we should do so. Recently with the popularity of Node.js, JavaScript has become a full-stack language,  it can be used as both frontend and backend programming language. Today we will give some hard facts which will convince you about the popularity of JavaScript. Just like William Ting said ""JavaScript will stay relevant as long as people use the internet". Ye...

   JavaScript,popularity     2014-06-07 08:52:36

  Device Experiences & Responsive Design

Most recently LukeW was the Chief Product Officer (CPO) and co-founder of Bagcheck which was acquired by Twitter Inc. in 2011. Luke is also the author of the book Mobile First and was Chief Design Architect (VP) at Yahoo! Inc. While the task of designing Web applications and sites for multiple devices can be daunting, two techniques can make the process more manageable: classifying device experiences and designing/building responsively. Here’s how these two approaches can work toge...

   User experience,Device,Responsive design     2012-03-31 00:10:31

  The History of Programming Languages

This post is part of our ReadWriteHack channel, which is a resource and guide for developers. The channel is sponsored by the Intel AppUp Developer Program. As you're exploring these resources, check out this helpful resource from our sponsors: AIR for AppUp: What You Need To Know Rackspace recently published a nice infographic on the evolution of programming languages. It starts with FORTRAN and COBOL and runs through Ruby on Rails (which, yes, is a framework and not a language). Unfo...

   History,Programming language,C,Java,Java     2011-07-28 09:00:23

  WireGuard VPN: Setup WG_VPN client App on Android phone and connect to local WG_VPN server on VM

We will show the detail steps about how to setup the WireGuard VPN client on an Android phone/pad and configure the VPN client to connect a WG_VPN server in local network. The setup process contents three main steps: Install WireGuard and create a key-pair in WireGuard client. Add the Android client peer information in the WireGuard server’s config file. Config the Android WireGuard client to connect to the server. The test environment network configuration:  Step 1. Install Wire...

   WIREGUARD,VPN,TUTORIAL     2020-10-24 08:46:42

  Mount DD image on Linux

Yesterday, my Raspberry Pi running Arch Linux was not able to boot with error: Kernel Panic, not syncing: no init found. I spent a night on it, but could not find a working solution. The last option is easy: reinstall the system. That is really the last resort, for I do not want to re-setup everything I have done: samba server, Time Machine server, Xunlei Offline Downloader… Unable to mount the SD card The system does not boot, so I need to find a way to get into the file system to identi...

   LINUX,DD IMAGE     2014-06-24 07:49:14

  What is cache penetration, cache breakdown and cache avalanche?

When designing and developing highly available system, cache is an very important consideration. It is useful to cache some frequently accessed data so that they can be accessed quickly and also cache can protect the downstream system like DB from being hit too often.  To provide better cache design in large systems, some problems may need to be considered first. In this post, we will talk about some frequently discussed cache problems and mitigation plans. Cache penetration Cache penetrati...

   SYSTEM DESIGN,CACHE PENETRATION,CACHE BREAKDOWN,CACHE AVALANCHE     2020-04-10 08:43:00

  Run JavaScript in GoLang

In some cases, there might be some JavaScript code needs to be ran in a GoLang project. Fortunately, there are a few libraries which support running JavaScript in GoLang. The most famous one would be v8. This is a Go API for the famous v8 JavaScript engine originally developed for the Chrominum project and the foundation of NodeJS. In this post, we will show some simple steps to get v8 working in a GoLang program on MacOS. First you need to install the package so that you can import it. Run...

   GOLANG,JAVASCRIPT,V8     2019-05-16 07:40:38

  Waking up early, 10 tips that work

In this blog post I am going to cover a topic that I have been occupied with for several weeks now: Becoming an early riser. Getting up early can be a great way to help you establish a daily routine which is the first step to becoming more productive. Here I present you 10 tips that helped me in becoming an early riser. 1. Get up The most important step is to get up. Actually not just get up, literally try to jump out of bed. After your alarm rings get up instantly, go to another room and t...

   Body,Rest,Health     2012-04-11 13:44:34

  6 necessary WordPress plugins for personal blogs

WordPress is now adopted by most bloggers, it has various themes and powerful plugins. There are lots of amazing plugins can be chosen such as spam comment filers and sitemap generators. For novice WordPress users, you may be confused about which plugin to choose, here we share with you 6 necessary WordPress plugins. Akismet Akismet is a built-in WordPress comment plugin. It checks your comments against the Akismet web service to see if they look like spam or not and lets you review the spam it ...

   WordPress plugin,Comment,Sitemap     2013-08-05 03:18:40