alexwang1983的专栏

http://www.cyberciti.biz/tips/nohup-execute-commands-after-you-exit-from-a-shell-prompt.htmlnohup Execute Commands After You Exit From a Shell Promptby Vivek Gite onJanuary 4, 2006 · 30 commen

1, install nodejs, the same as raspberry pi wget http://node-arm.herokuapp.com/node_latest_armhf.deb sudo dpkg -i node_latest_armhf.deb2, install pcduino nodejs module, us

1，要查看ssl的内容，需要得到server的server rsa key2, 打开wireshark, 找到如下路径， Edit -> Preferences -> protocols -> SSL然后点击 RSA Keys List: Edit,在新的RSA编辑界面创建一个新的RSA key其中IP address 是服务器的IPPort 一般是443protoco

1，连接单个mongodb的实例，可以参看node mongodb的文档https://github.com/mongodb/node-mongodb-native2， 连接mongodb 的mongos服务，只需要修改一下连接配置即可，如下var MongoClient = require('mongodb').MongoClient , format = r

Written by Severalnines on May 11, 2013origin: http://www.severalnines.com/blog/turning-mongodb-replica-set-sharded-clusterReplica Sets or Sharded Clusters?**

1，在Ubuntu上安装MongoDBsudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 7F0CEB10echo "deb http://repo.mongodb.org/apt/ubuntu "$(lsb_release -sc)"/mongodb-org/3.0 multiverse" | sudo

主要是利用HAProxy作为负载均衡器，利用activeMQ作为broker的集群。1，准备4台服务器，默认操作系统为Ubuntu14.04，三台服务器安装activeMQ, 另外一台服务器安装HAProxy作为负载均衡。2，安装和配置activeMQ安装jresudo apt-get install default-jreexport JAVA_HOME=/usr/lib/jv

1， 安装javasudo apt-get install default-jre修改java的home路径，这个在安装mysql jdbc的时候也会用到CLASSPATH=$CLASSPATH:/usr/share/java/mysql.jarexport CLASSPATH2, 安装可以参考这篇文章https://zeppelin.incuba

1，利用spark自带的ec2脚本来生成spark在spark的安装目录下，执行如下命令$ ./ec2/spark-ec2 -k -i -s --vpc-id= --subnet-id= launch , where  is the name of your EC2 key pair (that you gave it when you created it),  i

vi /etc/environment 添加如下LANG="en_US.UTF-8"LAGUAGE="en_US:en"LC_ALL="en_US.UTF-8"然后重新login

git archive --format=zip HEAD `git diff --name-only 8bbf69c253801228ff504ab080ce7cf44a924971 a27d045d8c60d6c62a4061b94763886577e1c0eb` > a.zip

1, 首先在ubuntu上面安装tor详情可以参考 https://www.torproject.org/docs/debian.html.enYou need to add the following entry in /etc/apt/sources.list or a new file in /etc/apt/sources.list.d/:deb http:

http://krasimirtsonev.com/blog/article/Nodejs-managing-child-processes-starting-stopping-exec-spawnNode.js: managing child processes/ blog / NodejsThese days I spent some time working on

执行需要执行的docker image$ docker run -i -t -p 8080:80 alex20160831/ubuntu /bin/bash在docker的容器内，启动apache2$ sudo service apache2 startcontainer内部访问web服务$ curl http://localhost执行如下命令从c

LinuxNOTE: You should have the usbnet module available for your Linux kernel. On most distributions, this is the case by default. If this is not the case for your distribution, you will need to en

在启动时自动执行linux上的一些程序/etc/rc.local

Linux 任务控制(bg job fg nohup &)一、 简介     Linux/Unix 区别于微软平台最大的优点就是真正的多用户，多任务。因此在任务管理上也有别具特色的管理思想。我们知道，在 Windows 上面，我们要么让一个程序作为服务在后台一直运行，要么停止这个服务。而不能让程序在前台后台之间切换。而 Linux 提供了 fg 和bg 命令，让你轻松调度正

http://upload.wikimedia.org/wikipedia/commons/a/a1/InternetSocketBasicDiagram_zhtw.pnghttp://www.linuxhowtos.org/C_C++/socket.htmSockets TutorialThis is a simple tutorial on using so

on ubuntu,cd /etc/apache2/conf.dvim charsetuncomment the following line.AddDefaultCharset UTF-8

本实例主要是关于在linux上的c语言编程，涉及到pipe在master process 和 sub process之间的交互。 如何利用fork创建multi-process， 如何利用从子进程中发送信号到父进程。#include #include #include #include #include #include int notify(int p

1，首先创建一个user，比如git$ sudo adduser git$ su git2，创建一个空工程$ mkdir project.git$ cd project.git$ git --bare init3，检测有没有ssh和sshd， 通过 $which ssh$ which sshd如果没有，就按装并且启动。

http://gitolite.com/gitolite/admin.html1 adding and removing reposNOTE: this page describes how to add new repos. To bring already existing repos into gitolite control, click here.

https://dericteong.wordpress.com/category/git/setup-git-server-in-amazon-ec2/1. Setup Git Server in Amazon EC2Posted on June 12, 20131. Setup a Ubuntu EC2 server instance in ht

下边的命令可以打印出git的分支图git log --graph --all --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)%Creset' --abbrev-commit --date=relative或者通过下列命令在git config文件里面设置别名。g

when you insert the micro sdcard to the pcduino, and try to backup or

进入Ubuntu启动界面，一般有几个选项，Ubuntu，Ubuntu高级。。。输入e键，进入grub的设置界面，将里面的ro修改为rw即可。以上可以启动，暂时性的设置但是为了永久保存这个设置，需要进入Ubuntu里面，修改文件/boot/grub/grub.cfg将其中类似于下面的一行中的ro全部修改为rw即可root=UUID=70abcd30-1a53-4aff-a

1. Boot liveCD2. "sudo fdisk -l" to find your boot disk, in my case it is /dev/sda1.3. "sudo mkdir /media/newroot"4. "sudo mount /dev/sda1 /media/newroot", change sda1 to whatever your boot di

The factory software image for Edison has SSH access enabled only via the USB Gadget network interface (192.168.2.15).   Configuring the board with 'configure_edison --setup' prompts for a root pass

通过intel xdk，如下的程序可以打印Hello world到grove lcd上var mraa = require ('mraa');var LCD = require ('jsupm_i2clcd');console.log('Current version of MRAA is', mraa.getVersion());var light = new mraa.Aio(0);var lightValue;var lcdMessage=" ";var myLCD = ne

在/etc/postfix/main.cf中添加如下信息smtpd_tls_cert_file=/etc/ssl/certs/your.crtsmtpd_tls_key_file=/etc/ssl/private/your.keysmtpd_tls_CAfile=/etc/ssl/certs/your-chaint.crtsmtpd_use_tls=yessmtpd_tls_sess